Various idw villains in sg, in my opinion:
Tarn: mixed tones of red and orange, some white, i just realized those are commonly considered medic colors in baseline and i am KEEPING IT. Blue optics. A simplified version of the mask, but still a mask. Hides his insecurity under a false confidence (and his mask) and an intense focus on the Decepticon code, may i gift him "i can fix this"–itus? Still obsessed with Megs, but unlike baseline it's more benign.
Sunder: navy blue and richer teal. Orange optics. His vibes are insanely off but he's secretly a himbo who means well, which isn't viewed upon so nicely in the sg autobots. Torn between replacing mnemosurgery with some other flavor of doctor, or having him reluctantly be a mnemosurgeon who tries to use his job for good like baseline Chromedome (angst time???)
Froid: black and gold with deep blue highlights. Mist blue optics. He's just a little guy™️ who's got a "I'm not paid enough for this shit" attitude, but he means his best for his patients. I like to think his theories are different in sg, but I'm unsure how to strike a balance between still keeping influences from Freud and it being less evil than what Froid's theories are in baseline.
Getaway: primarily black and deeper red/vivid green. Amber orange optics. Still an escapeologist, pretty amiable and sees good in everyone (despite being surrounded by assholes in the sg autobots). Would be immensely funny if, instead of being good at pretending to be a good guy, he's bad at pretending to be a bad guy.
Pharma: I'm squinting at my reference for him which is Not My Fave but I'm thinking of him maybe being charcoal gray, grape juice stain purple, and green or white highlights? Red optics. As far as his personality he used to be more confident but now he's a skittery thing, he downplays his several accomplishments and always puts others first (even if it means he's in a shit sandwich like SG Delphi). After Delphi he works with Tyrest for a while, which isn't ideal, and i feel like his behavior at this stage is like baseline but without the murder. He will get help.
Tyrest: maybe primarily a wine purple and tropical blue with a light brown-gray? Light lavender or white optics. i admit i haven't thought much about sg Tyrest as his personality is stickety to Shatter, but i feel like it's similar to baseline but minus the murder. He's haunted by his actions and up the shit crick without a paddle, but he'll get better i swear.
Atomizer: tropical green and sea blue with silver highlights? Blue or purple visor. sg Getaway's ride or die. Wow there's like nothing on tfwiki in his summary, so I'm going to make shit up and suggest in SG he's the skeptical type. I can see him having Opinions on some of getaway's plans but generally still helping
Scorponok: whoo boy why is he so many colors. Mostly yellow and red, replace the bright blue with bright red and keep the black? Definitely a blue visor. if i Shatter him, would he be a more benevolent scientist who cares for his creations type?
Trepan: i am absolutely lost on his personality because on one hand since he's so entwined with functionism and medical warcrimes i want to Make Him Worse, but on the other hand i want to see what it'd take to twist him away from that in Shattering his personality. Oh and color palette wise so far in tinkering he looks best with his brown swapped for a nice blue and yellow optics swapped for magenta/pink
Overlord: this sort of peach color with blue optics. Absolute sweetheart gentle giant in SG, probably.
