This is an Evil Cupid, i call it my little spy. It's vicious, greedy and once you're being targetted by it, you'll be haunted like no ending. Once you apply it to you, it'll follow to wherever you go, just like your "follower", you can find it under "pet" catagory. I've added an evil sound to this version to make it even evil. Trigger sound at "evil". lol.
Evil Cupid searches the area for people you hate. When you think he's found one, type HATE and Evil Cupid will try to fill their hearts with skulls! Please beware, you might be the next target of the evil cupid.

Evil Cupid also responds to: -
Yes
No
Wave
Hide
Yay
What

P.S. This is just a pet, it's not advisable to treat it as a weapon/tool to revenge your enemy.