The carnivorous plant
The carnivorous plant tries to eat anything that comes within its reach whether big or small. That’s its one and only “raison d’être”. It’s totally capable of gobbling up one of our heroes.
It can’t move about but there are several specimens in any part of the jungle. Mazu did an experiment on one of these plants once, trying to modify it to be less aggressive. She turned it into a kissing plant. It’s still just as aggressive, but now it just wants to smooch anything it can wrap its leaves around!