The Ultimate Battle!
...
cookie monster
Well, I'm not really sure.
See, if Cookie Monster were to rush at Kool-Aid Man, then "Big Red" could go ahead and pour some of his thirst quenching drink all over CM's cookies. It's not milk, so soggy cookies == hungry CM. Then again, that could make the Cookie Monster more angry.
But to be fair, Cookie Monster has the original Death Metal voice! So he could probably just throat some stuff at Kool-Aid Man and make him pee his pants... or jug... or whatever!
The Cookie Monster. He needs no cookies to win. The spastic frenzy he so routinely enters on Sesame Street would prove a devastating weapon.
Kool-Aid man, he's huge, and he's filled with Koolaid which is mostly water.
Water weighs a ton, and cookie monster could easily be sat on.
Besides, even if the cookie monster did win, the resulting explosion of glass from the Koolaid man would likely kill cookie monster.
Franky the Cool Aid guy, anyone who can burst through walls could win a fight, the cookie monster is a puppet.
I think I have said enough
It's a draw!
Because they will both collapse and die from "sugar diabetes" before the match ends.