Humpty Dumpty

A fat, bald thief with an egg-shaped body who rides on a rocket powered hobby horse and specializes in stealing collectibles. After escaping from Superboy during their first encounter, he began sending the Boy of Steel clues to his crimes in order to taunt him until Superboy captured him (SB No. 6/1, Jan/Feb 1950: "The Hobby Robber!").

Humpty Dumpty escaped from prison and began stealing dolls. As before he left clues for Superboy which ultimately allowed the Boy of Steel to capture him (SB No. 7/2, Mar/Apr 1950: "Dolls of Danger!").

Humpty Dumpty escaped again and began stealing flags, this time with the assistance of two armed thugs. They forced Superboy to promise not to contact the police in any way, not even with signal flags, by threatening to shoot a hostage in the head. Superboy tricked Humpty Dumpty into believing that he'd gone back on his word by hoisting a hospitality flag which caused nearby ships to start sailing for Humpty Dumpty's ship; Humpty Dumpty mistakenly believed that these ships were law enforcement vessels and fled. He was soon caputed by Superboy and returned to prison (SB No. 8/2, May/Jun 1950: "The Flags of Crime!").

Humpty Dumpty escaped yet again and began stealing model boats before being recaptured by Superboy (SB No. 9/3, Jul/Aug 1950: "Ship Ahoy, Superboy!" ).

Upon his next escape Humpty Dumpty began stealing "famous firsts." As usual he was captured and returned to prison by Superboy (SB No. 11/3, Nov/Dec 1950: "The Famous First Crimes!").

Humpty Dumpty was not seen for many years before finally returning to face Superboy yet again as the Curator (NSB No. 24/1, Dec 1981: "Blind Boy's Bluff").