In one appearance, which villain appeared to switch sides, thwarting crimes across Gotham City?

In "The Penguin Goes Straight", the former villain begins thwarting crimes across Gotham City and offers his services as a security expert. Batman and Robin don't believe his schtick for a second and try to expose what must be going on, only to end up framed for a jewel theft!

Asked by Ben Jenkins · Last updated 3 years ago · 15.2K views