Nightshade

Text from her reference sheet:
Nightshade is the leader of her trine.  She is a silent killer, specializing in poisons, stealth, and sniping.  She rarely says anything at all (and when she does she keeps it as short as possible), hardly outwardly shows emotion, and is usually completely unreadable to everyone except her trine.  She has an electronic paint job that comes with a 'Stealth Mode'.  As leader, she usually has to keep the peace within her trine, which can be a taxing job given that her trinemates are Hothead and Short Circuit.

Mounted arm guns can be combined to form a large sniper rifle.

Extended Bio:

Nightshade has a hollow compartment in her wrists that store vials of poisons and small gadgets that Hothead engineered; there is an opening at the end that allows Nightshade to easily dispense these items into her hands when needed.  Hothead calls the little gadgets "Shockers", and they are very small mechanisms (that bear a beetle-like appearance) that can bore into a bot's circuitry with a drill and send a high-voltage shock throughout their systems, silently and quickly shutting them down and incapacitating them.  Nightshade throws these at opponents with terrifying precision.

Nightshade very rarely outwardly shows it, but she's tired pretty much most of the time; that is, however, a very expected and reasonable reaction to being trined to Short Circuit and Hothead.  Many marvel at how it's possible someone as stoic, silent, and responsible as Nightshade ended up trined to two of the rowdiest Seekers in the Air Force, and Nightshade honestly couldn't explain how either, even if she wanted to.  Definitely holds the respect of more Decepticons than her trinemates do combined.
Despite this, she deeply loves both of them and always looks out for them, as she feels is her duty as trine leader.

Nightshade doesn't speak if she can avoid it.  Despite this, her trine are able to understand her perfectly, often able to carry on entire conversations with her without her even saying a word, much to the bewilderment of any other bots around to witness it.  The most she ever speaks is usually when talking to her superiors, but she also tends to yell "NO" and slap a hand over Short Circuit's mouth whenever her errant trinemate is about to say something inappropriate.  This actually happens incredibly often; one might even think that at this point Short Circuit deliberately does this just to get Nightshade to speak.
Deliberately elbowing or smacking her trinemates or hastily speaking over them to stop them from talking tends to happen a lot, but that is simply the nature of being trined to them.

Quite possibly the most dangerous and unhinged out of her trine, although that side of her is so rarely seen that it can't be said for sure.

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