Oleander

Once a well respected botanist, Oleander worked closely with another scientist on researching carnivorous plants. During an experiment gone wrong, the two found suddenly found themselves fused together - along with the carnivorous plant they were performing DNA research on.

The two (now one singular body with their skulls merged back to back, though able to switch who faces the front) attempted to reconcile their new existence, but the experiment affected her partner particularly - with the other scientist developing a nearly insatiable hunger and bloodlust as a result of the plant DNA.

In an attempt to control the situation, Oleander fled to the sewers. They lurk there now, living off the unlucky critters that live down there. Despite the circumstances, Oleander generally keeps things under control. She's struck up a friendship with Newt, and is one of the few beings that Wasp is wary of.