Okay, I won with a joke entry...let's make this more serious.

Heavyweights
Wedginator 9.0
Super Gore Septua
Illusion of Dread
7roubloon
The Alexandra Sisters: Retribution (clusterbot)
Absolution (walker)
Jinx
Surgeon General (realie; Battlebots 2009 version. Here's hoping you can find some vids of it in action...if not, just search him on YouTube and look for the video of him with the designer disc :P)

Featherweight
Micro Gore Evo

Lightweight
Anti-Virus 3.0

Middleweight
Terminus

Superheavyweight
Tax Cutter's Return

All stats are here.