His Name is Lancelot - Spamalot Original Broadway Cast
I haven't done Invader Zim icons in a while, so I figured I should try my hand at it again. I'm a bit rusty at cartoon icons right now, but some of them turned out good. There are also some quote icons from Zim, which should serve for a laugh or two if you're familiar with it. If not, they will just seem very weird or silly.