こんにちは guys, I really need your help here..

What's a clever three letter word to sub for saying monster, like RADs (Regular Attribute Dodgers) that makes sense, または a clever word other than monster? This could really help me in life (don't ask why, XxKeithHarkinxX will troll me) and I will give あなた some credit, an add, props, anything あなた want, just PLEEEASE help me out with this is the least あなた guys can do.