Quackerjack

Quackerjack is a character from the Disney series Darkwing Duck, and a major rival of a popular video game star, Whiffle Boy. He was once a toymaker who was run out of business after the video game market expanded, but more because his toys were so lethal no one in their right mind would buy them. He became a supervillain who robbed banks to get money to fund his toymaking ventures, in lieu of bringing joy to the little children of St. Canard.

Quackerjack seems to be a amalgamation of the two DC supervillians the Joker and the Toyman.

He also has a little doll named Mr. Banana Brain who he carries around everywhere and talks to. Most of the time he talks it back without seeming aware that he's doing it, in rhyming form, no less.

He's a twisted genius, and has built many successful, if a little creepy, toys.

He has been known to team up with Megavolt, he was a team player of the Fearsome Five (Headed by Negaduck and including Bushroot, The Liquidator and Megavolt), but more often than not he works alone.

His debut was "Whiffle While You Work", in which he first met Darkwing (though he seemed to know him from somewhere, Darkwing didn't know him) and their rivalry was established.

Sometimes he steals toys, like in "The Haunting of Mr. Banana Brain", where he stole a haunted Jack-in-the-box that contained a psy-vampire named Paddywhack, who possessed his doll for a little while, and showed he was unaware of himself talking Mr. Banana Brain on a usual basis. In that episode he was forced to team up with Darkwing Duck to get rid of Paddywhack.

Sometimes he attacks rival toy companies, like in "Toys Czar Us", where he forced the manager of a toy store to stock shelves with his personal brand of fun, despite protest.

Once he went back in time using his Time Top to eliminate the very first yo-yo, in Quack of Ages. This ended in his accidental aiding of the invention of the yo-yo, thanks to Darkwing.

Once he used the Top to travel into the future with Megavolt to discover more advanced toys, in Time And Punishment, and thanks to an accidental kidnapping of Gosalyn, turned Darkwing into the crazed Dark Warrior Duck.

In "Stressed To Kill", Quackerjack teamed up with Megavolt again, and using a toy called Mr. Relaxatron, the two had the city in an apathetic daze as they robbed it blind and caused mass mayhem.

He briefly appeared in "Jailbird" as a Fearsome Five member and it was revealed that his superpower was "wackiness", without which he became depressed and whiny.

He also appeared in Just Us Justice Ducks as a Fearsome Five Member, where a fight with Gizmoduck proved he had false teeth.

He is also the only member of the Fearsome Five whose real identity and personal back story were never revealed.

Michael Bell voices this villain.