She's extremely lethargic and would prefer to spend the day sleeping or relaxing with those she trusts the most. If she likes someone enough, she brings them gifts (things she considers pretty she just takes with her, no regard of their value or power) it could be from some powerful rare item to literal garbage.
She can shapeshift into anything but is very lazy about it. The bigger the thing she turns into, the more energy she spends, so she usually turns into small animals or other people.
Abridged backstory:
Madd (along with other shapeshifters) was captured by researches in an attempt to understand and replicate their abilities. After years of cruel experimenting and tests, the scientist's budget got cut off due to lack of results, so they closed the lab with the test subjects in it. Trapped in silver cages and drugged, they were unable to use their abilities to escape, so most of them starved to death. To her knowledge, she's the only one that made it out, she doesn't remember how she did it, and she isn't particularly interested on finding out.
Little does she know, some of the scientist's descendants returned to the abandoned laboratory and released her to study how she behaves after being locked in for so long. Weak and starving, Madd was too weak to recall the events. She's being observed and studied without her knowledge, undercover scientists watching her every step. After their curiosity is satisfied, they plan on taking her back to testing.
She might start to remember repressed memories if she is to encounter something specific that reminds her of the time she spent locked up.
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=========ABILITIES=========
-Shapeshifting
-Accelerated healing
-Inhuman reflexes
- Contortionism/extreme flexibility
===========WEAKNESSES========
-Silver, not only does it burn, but it represses her abilities
- Lab coats, if she sees a person with it, she'll go berserk and either attack or flee
-She's kinda stupid, could fall for a trap easily
-Her own laziness. Depending on how tired she is, she doesn't mind getting tossed around or injured (As long as it's not significant damage. She doesn't consider broken bones significant)
=========TRIVIA===========
-Her name was assigned to her by scientists (others were named things like 'funny', 'sad', etc) hers was just supposed to me "Mad", but she misspelt it. She still thinks she's right
-She's extremely hard to piss off
-Loves pranking others