Chucky

Adam Taurus. Despite the creepily endearing terms he calls her during their confrontation at Beacon, his feelings for Blake aren't love but lust. He abused her physically and emotionally during her time in the White Fang and after she leaves him, he makes it a personal goal to destroy everything and everyone she loves, and ultimately attempts to kill her at the end of his life. All the while having the nerve to blame her for what he's done.

@LordJarman Honestly, I hated that the writers did that, I liked it better when it was implied that he still genuinely loved her and was a well-intentioned extremist. Now he is just a one dimensional as most of the villains in RWBY.

The Joker in some continuities

But in those continuities the Joker isn't PE then.