Katz. Stupid kid had it coming and it put a big smile on my face.
Quess Pariah, same reason as Katz. Also put a smile on my face.
When Bernie became a burger.
Nicole's death from SEED. While I think he is too queer and he deserved to die, I think that's a pretty gory way too die.
Death of Kycilia. That scene is a demonstration of Char's awesome aiming skills.
Paptimus. Come on, he got killed by a watermelon ice pop!
And there are many more awesome deaths.