funniest monster
 

which monster made ya lough
pupmkin rapper-its rapping
bird bane-reminded me of disney's goofy
freezard- when he said "get into my belly" like fat bastard from austin powers
torch tiger - how he tried again and again to spit fire

Pumpkin Rapper. But Elgar and Rito are both monsters so they'd win my all out vote. But for the purpose of this poll, its Pumpkin Rapper.