Trish shapeshifting things:
Trish frequents clothing stores, but she rarely buys anything for herself, she just looks at clothes and then recreates them with shapeshifting. She sometimes uses this to buy gifts for her friends, though.
She impersonates celebrities a lot, mostly just to make her friends laugh and for brief pranks. She has to be careful not to attract too much attention, least of all because she might get sued.
She can, in fact, imitate non-human creatures, much to the jealousy of the rest of the crew. Her favorite forms are a cat or a horse. She can also turn into demons, and she does use this to jumpscare her friends (Lady teases her, suggests that perhaps Trish enjoys getting shot ;)).
The one thing she has yet to master is inanimate objects. She studies suits of armor and Devil Breakers as inspiration, since they're sort of a step between person and not-person.
She doesn't age naturally, and she never wished to until she noticed Lady showing signs of aging, which only made her look hotter and more badass in Trish's eyes. So she will sometimes age herself up, just for fun. It makes Dante a little sad because it reminds him how young his mother was when she died, but he hides it well.
She frequently takes the form of her friends to mock them. With Dante, she just kinda spouts catchphrases and plays up his immature and irresponsible qualities. With Vergil, she'd probably do the same thing, if they ever became friends. I feel like she'd also imitate V if she really wanted to embarrass Vergil. With Lady, she just says and does obscene things while the real Lady pretends not to be turned on.
She occasionally does weirder, creepier things, like temporarily sprouting extra limbs, just for convenience. One of these days Lady will gather the courage to ask what else those hands do. Once Dante found her reduced to a head and dozing off, so he set her on the floor and punted her into the street.
