Jester (Quality I)

Golden Age Origin
The Jester was a robber who dressed in a middle age clown suit to commit crimes. However, when Professor Mason was kidnapped by a Jester impersonator from Ratney's gang who wanted a formula Professor Mason was making for the US government. The Jester decided to rescue the professor. Madam Fatal, who is also investigating the kidnapping, ended up saving the Jester's life during their confrontation with Ratney's gang.

After the fight, Madame Fatal allowed the Jester to go in gratitude for helping to save Professor Mason. However when they shook hands, Fatal noticed a tell-tale scar on the Jester's hand which identifies him as Mason's estranged son, Robert.

Golden Age Appearances

 * Crack Comics #10