I think Toxitron was intended to be a Bizarro Optimus, but of course, the name and concept of Bizarro is owned by DC - but I think it's suggested in the tech specs line "a bizarre duplicate of Optimus Prime" -- and just as Bizarro is like the opposite of Superman in many ways, it seems that Toxitron is the opposite of Optimus Prime.

Bizarro has the same abilities and powers as Superman, but some of them are 'reversed' (e.g. freeze vision instead of heat vision, vacuum breath instead of super breath, vulnerable to blue Kryptonite instead of green Kryptonite etc.) - Toxitron has some traits similar to Optimus Prime, most noteably both have exceptional physical strength. But a lot of Toxitron's features are reversed to Animated Optimus Prime, e.g. Prime's cannon can shoot fire retardant chemicals, whereas Toxitron's cannon shoots corrosive chemicals. Optimus Prime has a high intelligence, whereas Toxitron has a 'stunted intellect.' Toxitron even drives in reverse. Also, Bizarro is meant to be ugly, and I'd say that was the intent for Toxitron too. Toxitron was created as a failed experiment to 'artificially' create a warrior in an Autobot shell - Bizarro was created in an attempt to clone a Kryptonian (Pre-Crisis Bizarros = clones of Zod, Post-Crisis Bizarro = clone of Superman).

RE: Fisitron's function... "weapondry"? So... his function is to dry wet weapons?? Or does someone note know how to spell 'weaponry' (possibly the same person who can't spelly 'nemesis'?). ???