>>5726929Dinobot is almost too obvious so saying him is almost too easy. Otherwise I'd say Tarantulas, but he, along with Megatron, had better Transmetal bodies. So I'll go with Terrorsaur.
Polar Claw is also one that'd make me go crazy. Along with Wolfang and Cybershark. Going into later stuff, Skyshadow was another huge favorite of mine.
Razorbeast is sort of borderline, he was prominent in the IDW miniseries, but that probably doesn't matter much to Takara. Still he feels like a standout of the non-show toys even beyond the comic appearance. He even had that reference on Fresh Prince.