Jerkass Woobie: Soaron. Yes, the big tin turkey has done some terrible things throughout the series, but you feel at least a little bit sorry for him in that one scene where Blastarr abuses him for shits and giggles while he was helpless and still regenerating.
Leaving aside the badly aged CG, expect this any time Soaron fires his lasers.
In one episode, Tank is smashing through a wall made of cinderblocks... except there was no mortar holding them together. The cinderblocks just fall on the ground like someone was pushing them.
Uncertain Audience: While the toys were made for kids, the show itself was fairly dark, dealing with themes about nuclear war and Nazism, and the title of the show was enough to turn off most adults. The live-action violence didn't help matters.