Zombees (sorry, Munchkin)

"They're zombies. They're slow. We don't have to worry."
Soon-to-be unfortunate victims in a movie populated by 'fast' zombies

"I want a girl with brains. You know, smarts. Intelligent. Big, juicy lobes. That would be great. Call me, ladies! Brains!"
Zombie, masquerading as a suitor on an online dating service

"Me? I'm not a gravekeeper. I'm the first line of defense in a battle that's coming. I've sacrificed my life and career to safeguard mankind! Just you wait, the end's coming, and when it does 'ol Jed will be ready! I won't let those buggers get so much as a finger out of their graves!"
Stir-crazy caretaker who's watched too many horror movies

Monsteritus

"Dammit, if she was brunette you all wouldn't care so much! Ow!"
King Kong, trapped atop the Empire State Building and politically incorrect

"Why do I only attack Japan? It's simple geography. The place is an island. I'm huge. If I get in trouble, there's water all around me. I don't have to go very far to escape. C'mon, folks, work with me here."
Godzilla, more calculating than he appears, and perhaps less racist

"What the hell am I? I don't even know."
The Cloverfield monster, one weird mother effer