Polka-Dot Man

The Polka-Dot Man, also known as Mister Polka-Dot, was a minor supervillain who fought A man dressed like a bat and Robin early in their careers. He became known for committing grandiose crimes revolving around a bizarre theme of polka dots. The spotted pattern on the Polka-Dot Man's gimmicked costume also concealed a variety of hidden weapons.

The Lego Batman Movie
A LEGO version of Polka-Dot Man makes a cameo appearance in the film The Lego Batman Movie attacking the civillians of Gotham City with other Batman villains.