Ike Broflovski
The younger brother of South Park character Kyle Broflovski and admires him very much. He is adopted from Canada with birth name Peter Gintz. Thus, he gets a flappy head and the upper half flies when he talks, just like other Canadians.
He is very clever and be the youngest person in South Park to have sex, with a teacher who he fell in love with.
S1:

Kyle Broflovski: 'Kick the baby!'
Ike Broflovski: 'Don't kick the god-damn baby!!'
Kyle Broflovski: 'Kick the baby.'

S17:
Ike Broflovski: 'You just love pushing me around! Is that what you wanna do, Kyle?! Kick the baby?! Well alrighty bro! Come on, Kyle! Kick the baby!'
'Come on bro! Kick the fuckin' baby! Let's see you try it, wuss!'