User blog comment:Desert Croc/Season 4 Preview/@comment-25968390-20151023172700/@comment-25968390-20151024142855

Understandably, that brings us down to two potential combatants:

Dib- At the time of Invader Zim's release, not even Sasquatch believers exist unlike now...

GiR- While he did try to kill Zim, he is normally a mentally unstable comic relief robot given to Zim as the Almighty Tallest KNOW Zim will fail at his mission...

There might be others that I didn't mention, but these are the most notable.

Verdict?