Assistant Mayor Bellwether is the main antagonist of Disney's 2016 animated feature film Zootopia. A scorned sheep, her ultimate goal is to supplement the position held by Mayor Lionheart and create a new order where prey animals dominate the predators.
Obviously, don't nominate any human characters. Hybrids like Cheetah or The Lizard are okay, as are shapeshifters with one set animal form (eg Professor McGonagall.)
