Clothing: Robert is almost never seen without his trademark Terran lab coat and glasses. They are nearly omnipresent and he has a strong attachment to them; attempting to remove them or otherwise divest them from him will cause a lot of anxiety. (Sherlock is free to notice that the lab coat is such that it covers his arms, and Robert doesn't seem to have any problem with it being opened. This could hint towards him hiding something about his arms, of course.)
Beyond that, he tends to wear very dull-coloured clothes (blue is the brightest colour he'd normally wear), with an air for a strange fusion of business-casual and just plain casual. His clothes are nearly always in top-notch condition and show signs of being frequently laundered - probably too frequently, to be honest. If he's wearing anything that deviates strongly from this, then it must be an incredibly unusual situation (most often a Shift, honestly).
However, Robert has no conceptualization of the gendering of clothing - as such, it may not be uncommon for Sherlock to see him wearing things like skirts and blouses, provided they're business-casual and in darker colours themselves. (He's free to point this out to him, by the way, though other characters probably will too.)
His shoes tend to be very oriented towards the practical - they're most often a good-quality walking shoe rather than any kind of fashionable professional shoe, though he might wear that at someone else's behest (again this wouldn't be usually obvious).
In wintry conditions, he wears two coats - his lab coat underneath a larger winter coat. He also tends towards boots and a scarf; he's rather sensitive to extreme cold, though living in a house with the temperature turned down all the time has desensitized him to lesser amounts of it.
He carries a simple white cloth bag - something like this - around with him when he goes shopping or otherwise on excursions. It's also clean and well-kept, and doesn't show many signs of being used for a year or more.
Incidentally, both Robert's glasses and lab coat are made with compounds that don't otherwise exist in Luceti. If Sherlock ever got a chance to examine them in microscopic detail, he'd be able to see this. As well, the frames and lenses of his glasses are extremely flexible and won't break in the vast majority of circumstances. Sherlock is free to notice this anomaly.
... One of the hardest things to notice is a thin cord under his clothes. (In order to see it, his lab coat would have to be opened.) The cord is a plain black; on the end of it hangs a metal turtle pendant. The front of it is green and purple speckled enamel; the back is plain metal, and etched with "Robert + Donatello". (This will be an obvious clue as to who Robert is with if Sherlock doesn't pick this up casually from the village; it's not exactly hidden.)
Personal Grooming Overall: Robert is extremely neat and clean. He goes to a lot of effort - obsessive effort, actually - at keeping himself as such, and it is very rare to see him even somewhat dishevelled. However, since he's exercising and training more often now, this will probably begin to become more commonplace - he'll still try to go out of his way to keep clean, though, and more often than not will be relatively immaculate. He tends to smell like a mixture of diluted cleaning products, a science lab, and a hospital - very sterile smells. His fingernails and other such small, delicate areas are routinely cleaned, like the rest of him. (Incidentally, he's right-handed.)
Hair Specifics: Robert's hair is usually kept clipped and relatively short, more for ease of care than anything else. He has a prominent M-shaped bangline that almost never varies, and he takes great care to keep his hair exactly symmetrical, to the point it looks strangely so. He doesn't use hair products save shampoos and conditioners to keep it clean; the scent of them might indicate that they're generally organic soaps (though he isn't opposed to using more chemical ones, but Terran ethos pushes him towards the recyclable ones generally). Robert brushes his hair on a consistent basis, and always towards the back of his head, except for the area immediately around the natural "point" at the back of his head, where his hair growth pattern meets.
Skin Specifics: Robert's skin is overall pale (in a sickly sort of way) and unmarred, showing that he hasn't done much in the way of physical exertion. Though Luceti has changed this, he hasn't entirely shifted away from a lifetime of gentle desk work, and as such his skin is unblemished for the most part. This, however, is drastically changed when it comes to his arms. Dark, prominent track marks run the length of both of his arms; the scarring is most obvious around his wrists and inner elbows, but the bruised veins and stretching scars run as far up as part of his chest. These are, in the vast majority of situations, going to be covered - if Sherlock can see them then he's probably panicking. There are visible indents where his glasses tend to sit.
Physical Appearance (Beyond Grooming): Robert is noticeably short - a scant 5' 4.7" (1.64388 m) tall and a mere 133.62 LBS (60.6090 kg) on average, though his weight may be slowly increasing due to putting on muscle. Overall, he is very slender and small; he looks rather fragile; however, his arms and legs in particular are starting to develop muscular definition due to training with a sword and other similar exercises. It may, however, be obvious that this is recent and the majority of his life was spent relatively sedentary. His features are strangely "ethnically blended" despite his overall skin colour being close to a Caucasian. His eyes are a misty gray and his hair is a mahogany brown (so with a faint, dull reddish cast). His wings are covered by his omnipresent lab coat (which may as well be a body part) - but were they ever to be uncovered, they'd be a striking black and white with a blue sheen. If Sherlock knows anything of birds, he'll recognize them as the wings of Pica pica or the European magpie.
Habits/Quirks/Noticeable Traits: Perhaps Robert's most visible traits are anxiety-related. He has a very rigid posture, with closed-in body language, hands often held up to his chest and fidgeting or wringing his fingers often. He has trouble holding eye contact and will look away frequently if someone tries to make it. He has a number of small nervous habits, including fiddling with his glasses and lab coat sleeves, and glancing down often as well as shuffling slightly in place. He frequently organizes objects in places he is, usually in patterns of three. This is repeated especially if he's nervous, upset or otherwise in a bad mood. (It may be recognizable to Sherlock as a symptom of OCD, if the rest doesn't give it away.) He isn't usually touchy-feely with people unless he's extremely comfortable with them.
... If he opens his mouth, his stutter will be immediately obvious. It's pretty apparent and he's a little embarrassed about it now that it's been repeatedly brought up. (The stutter is significantly less obvious when he's with people he trusts, in a situation that's not stressful, or otherwise not being pressured, though it's still there if you listen closely.) Besides the stutter, though, Robert also has an accent - it's something like an English accent, but spoken by a mediocre actor.
Profession: Robert is an astrobiologist and will openly identify himself as such, but he also acts a lot like a general scientist and in Luceti has become something of a medical doctor as well. He's currently undergoing training by Trafalgar Law and Mizuno Ami to become a better doctor, and he's constantly sharpening his general knowledge - both out of a genuine love of learning, and out of a feeling like he should be doing something useful with his time in Luceti.
Hobbies/Common Activities: It's easy to find Robert in the library - that is his most common hideaway other than his own home, which isn't easy to get into due to a barrier surrounding it made by Helios (this is not common knowledge and only a few people have any idea it's there). He will often be in there studying or using his nanocomputer, which is immediately obviously different from Luceti technology - 15 cm long, coated in blue-tinted artificial chlorophyll solar cells, opening by sliding out and full of various scientific tools (with a clear or a dark case depending on whether it needs to be charged or not; Robert usually has both with him if he takes his nanocomputer out). Besides this, he might be volunteering at the Battle Dome clinic (generally earlier in the mornings), or training there with Link at his sword practising. He might also be seen in the facility programming a simulation. In addition, he does chores (more often when it's cold, a fact Sherlock is free to notice) and can be found at the Item Shop doing grocery shopping and the like. He's usually alone, but sometimes might have company - most notably that of either one of the TMNT (they alone will stand out like sore thumbs), Helios, Grune, or another close CR member.
Information (That Would Probably Be Easy To Pick Up):
Robert is gay and involved with Donatello. This is really not hard to figure out if you pay any attention to him - he doesn't blatantly announce it anymore, but he gushes about Don so often and in general lives with him and does so much with him that it's a hard conclusion not to come to. (Feel free to assume Awkward Things about Leonardo, though it should be easy enough to figure out he's Don's brother.)
Robert has AS (Asperger Syndrome), or something similar to it. This... will also be pretty easy to figure out, if Sherlock pays particular attention to how he interacts with people. Having a tendency to take things overly-literally and in general missing social cues that would seem obvious will further drive this point home. Robert doesn't announce this either, but he will admit it if asked without much issue.
Robert is from far in the future - 2332 A.D, to be exact. The way he acts will make this obvious if he doesn't bluntly say it himself. Sherlock may be able to guess things about his culture - his pacifism, his world's skew towards the scientific, etc. - from the way he talks and the terms he uses to describe things ("archaic" and "barbaric" being especially telling). He'll helpfully clarify if asked about it.
He lives in House 55, with Don and Leo, as well as his cat Carbon, whom he's very fond of. He also raises quite a few plants in hydroponic gardens in his house, so they might be visible in imagery.
...
... I think that's about it? If I can think of anything else (sob) then I'll add it...?
Robert Hastings
Clothing: Robert is almost never seen without his trademark Terran lab coat and glasses. They are nearly omnipresent and he has a strong attachment to them; attempting to remove them or otherwise divest them from him will cause a lot of anxiety. (Sherlock is free to notice that the lab coat is such that it covers his arms, and Robert doesn't seem to have any problem with it being opened. This could hint towards him hiding something about his arms, of course.)
Beyond that, he tends to wear very dull-coloured clothes (blue is the brightest colour he'd normally wear), with an air for a strange fusion of business-casual and just plain casual. His clothes are nearly always in top-notch condition and show signs of being frequently laundered - probably too frequently, to be honest. If he's wearing anything that deviates strongly from this, then it must be an incredibly unusual situation (most often a Shift, honestly).
However, Robert has no conceptualization of the gendering of clothing - as such, it may not be uncommon for Sherlock to see him wearing things like skirts and blouses, provided they're business-casual and in darker colours themselves. (He's free to point this out to him, by the way, though other characters probably will too.)
His shoes tend to be very oriented towards the practical - they're most often a good-quality walking shoe rather than any kind of fashionable professional shoe, though he might wear that at someone else's behest (again this wouldn't be usually obvious).
In wintry conditions, he wears two coats - his lab coat underneath a larger winter coat. He also tends towards boots and a scarf; he's rather sensitive to extreme cold, though living in a house with the temperature turned down all the time has desensitized him to lesser amounts of it.
He carries a simple white cloth bag - something like this - around with him when he goes shopping or otherwise on excursions. It's also clean and well-kept, and doesn't show many signs of being used for a year or more.
Incidentally, both Robert's glasses and lab coat are made with compounds that don't otherwise exist in Luceti. If Sherlock ever got a chance to examine them in microscopic detail, he'd be able to see this. As well, the frames and lenses of his glasses are extremely flexible and won't break in the vast majority of circumstances. Sherlock is free to notice this anomaly.
... One of the hardest things to notice is a thin cord under his clothes. (In order to see it, his lab coat would have to be opened.) The cord is a plain black; on the end of it hangs a metal turtle pendant. The front of it is green and purple speckled enamel; the back is plain metal, and etched with "Robert + Donatello". (This will be an obvious clue as to who Robert is with if Sherlock doesn't pick this up casually from the village; it's not exactly hidden.)
Personal Grooming Overall: Robert is extremely neat and clean. He goes to a lot of effort - obsessive effort, actually - at keeping himself as such, and it is very rare to see him even somewhat dishevelled. However, since he's exercising and training more often now, this will probably begin to become more commonplace - he'll still try to go out of his way to keep clean, though, and more often than not will be relatively immaculate. He tends to smell like a mixture of diluted cleaning products, a science lab, and a hospital - very sterile smells. His fingernails and other such small, delicate areas are routinely cleaned, like the rest of him. (Incidentally, he's right-handed.)
Hair Specifics: Robert's hair is usually kept clipped and relatively short, more for ease of care than anything else. He has a prominent M-shaped bangline that almost never varies, and he takes great care to keep his hair exactly symmetrical, to the point it looks strangely so. He doesn't use hair products save shampoos and conditioners to keep it clean; the scent of them might indicate that they're generally organic soaps (though he isn't opposed to using more chemical ones, but Terran ethos pushes him towards the recyclable ones generally). Robert brushes his hair on a consistent basis, and always towards the back of his head, except for the area immediately around the natural "point" at the back of his head, where his hair growth pattern meets.
Skin Specifics: Robert's skin is overall pale (in a sickly sort of way) and unmarred, showing that he hasn't done much in the way of physical exertion. Though Luceti has changed this, he hasn't entirely shifted away from a lifetime of gentle desk work, and as such his skin is unblemished for the most part. This, however, is drastically changed when it comes to his arms. Dark, prominent track marks run the length of both of his arms; the scarring is most obvious around his wrists and inner elbows, but the bruised veins and stretching scars run as far up as part of his chest. These are, in the vast majority of situations, going to be covered - if Sherlock can see them then he's probably panicking. There are visible indents where his glasses tend to sit.
Physical Appearance (Beyond Grooming): Robert is noticeably short - a scant 5' 4.7" (1.64388 m) tall and a mere 133.62 LBS (60.6090 kg) on average, though his weight may be slowly increasing due to putting on muscle. Overall, he is very slender and small; he looks rather fragile; however, his arms and legs in particular are starting to develop muscular definition due to training with a sword and other similar exercises. It may, however, be obvious that this is recent and the majority of his life was spent relatively sedentary. His features are strangely "ethnically blended" despite his overall skin colour being close to a Caucasian. His eyes are a misty gray and his hair is a mahogany brown (so with a faint, dull reddish cast). His wings are covered by his omnipresent lab coat (which may as well be a body part) - but were they ever to be uncovered, they'd be a striking black and white with a blue sheen. If Sherlock knows anything of birds, he'll recognize them as the wings of Pica pica or the European magpie.
Habits/Quirks/Noticeable Traits: Perhaps Robert's most visible traits are anxiety-related. He has a very rigid posture, with closed-in body language, hands often held up to his chest and fidgeting or wringing his fingers often. He has trouble holding eye contact and will look away frequently if someone tries to make it. He has a number of small nervous habits, including fiddling with his glasses and lab coat sleeves, and glancing down often as well as shuffling slightly in place. He frequently organizes objects in places he is, usually in patterns of three. This is repeated especially if he's nervous, upset or otherwise in a bad mood. (It may be recognizable to Sherlock as a symptom of OCD, if the rest doesn't give it away.) He isn't usually touchy-feely with people unless he's extremely comfortable with them.
... If he opens his mouth, his stutter will be immediately obvious. It's pretty apparent and he's a little embarrassed about it now that it's been repeatedly brought up. (The stutter is significantly less obvious when he's with people he trusts, in a situation that's not stressful, or otherwise not being pressured, though it's still there if you listen closely.) Besides the stutter, though, Robert also has an accent - it's something like an English accent, but spoken by a mediocre actor.
Profession: Robert is an astrobiologist and will openly identify himself as such, but he also acts a lot like a general scientist and in Luceti has become something of a medical doctor as well. He's currently undergoing training by Trafalgar Law and Mizuno Ami to become a better doctor, and he's constantly sharpening his general knowledge - both out of a genuine love of learning, and out of a feeling like he should be doing something useful with his time in Luceti.
Hobbies/Common Activities: It's easy to find Robert in the library - that is his most common hideaway other than his own home, which isn't easy to get into due to a barrier surrounding it made by Helios (this is not common knowledge and only a few people have any idea it's there). He will often be in there studying or using his nanocomputer, which is immediately obviously different from Luceti technology - 15 cm long, coated in blue-tinted artificial chlorophyll solar cells, opening by sliding out and full of various scientific tools (with a clear or a dark case depending on whether it needs to be charged or not; Robert usually has both with him if he takes his nanocomputer out). Besides this, he might be volunteering at the Battle Dome clinic (generally earlier in the mornings), or training there with Link at his sword practising. He might also be seen in the facility programming a simulation. In addition, he does chores (more often when it's cold, a fact Sherlock is free to notice) and can be found at the Item Shop doing grocery shopping and the like. He's usually alone, but sometimes might have company - most notably that of either one of the TMNT (they alone will stand out like sore thumbs), Helios, Grune, or another close CR member.
Information (That Would Probably Be Easy To Pick Up):
Robert is gay and involved with Donatello. This is really not hard to figure out if you pay any attention to him - he doesn't blatantly announce it anymore, but he gushes about Don so often and in general lives with him and does so much with him that it's a hard conclusion not to come to. (Feel free to assume Awkward Things about Leonardo, though it should be easy enough to figure out he's Don's brother.)
Robert has AS (Asperger Syndrome), or something similar to it. This... will also be pretty easy to figure out, if Sherlock pays particular attention to how he interacts with people. Having a tendency to take things overly-literally and in general missing social cues that would seem obvious will further drive this point home. Robert doesn't announce this either, but he will admit it if asked without much issue.
Robert is from far in the future - 2332 A.D, to be exact. The way he acts will make this obvious if he doesn't bluntly say it himself. Sherlock may be able to guess things about his culture - his pacifism, his world's skew towards the scientific, etc. - from the way he talks and the terms he uses to describe things ("archaic" and "barbaric" being especially telling). He'll helpfully clarify if asked about it.
He lives in House 55, with Don and Leo, as well as his cat Carbon, whom he's very fond of. He also raises quite a few plants in hydroponic gardens in his house, so they might be visible in imagery.
...
... I think that's about it? If I can think of anything else (sob) then I'll add it...?