Jesus, the IMP is superugly!
Vindicator and Ostol are ugly for sure, but even they lose against the IMP...damn, what a retarded looking Mech.
Well, here's my nominee: the Kintaro!
I mean, WTF!?! A 55 tons Mech in a sweet dress? "Hey Kintaro creator, what do the 5 fingers say to the face?" - *SLAP!*