Ugliest tank?

[Somedevil]

We got Ugly one but we had not the Wired and totally Insane Proposal for Tanks

Now enter into world of Strange and wacky Technology: Soviet Tank ideas from 1940s
(This art work based on Soviet Patens and use for Russian Book about that subject translate in english it's called "WWII Stalin's Steel Balls: Soviet Ball Spherical Tanks Projects Plans"

You want more of this ?

Russian Battle Bots decades before the TV Show

 

[Hammerbolt]

I bet it was in the Pacific Theater - spikes to dissuade folks jumping on tank to open hatches and chuck explosives in.

Most likely. It was one of the japanese AT tactics, since they were pratically devoid of AT weapons...