Beast Wars Spittor and Robots in Disguise Slapper.
Spittor is a typical Predacon toady, full of arrogance,
overconfidence, and, most of all, stupidity. His arsenal of poisons
more deadly than a Cybertron razor snake,
however, make him a force to be reckoned with when he can focus his
anger. One touch of his membranous skin can pump enough toxins into a
Maximal to drive them to dementia, and then he can head-butt them into
submission with his tongue.
Slapper is a dim-witted thug, even by Predacon standards.
He's just about smart enough to have a cruel sense of humor, enjoying
the failures and injuries inflicted on his own teammates. Slapper
manages to combine stealth and stupidity; his prowess in amphibious
assaults makes it easy for him to sneak up on foes, but he's so gullible
that once he gets there, he can just about be talked out of fighting.