Batman 139 was published with a cover date of April 1961. Bat-Girl (Betty Kane) and King Cobra were introduced in "Bat-Girl!" and Bulls-Eye was introduced in "The Blue Bowman". They were created by Bill Finger and Sheldon Moldoff. This issue marked the only time the Singnalman appeared as the Blue Bowman. ("The Blue Bowman", "The Island of a 1,000 Traps", "Batgirl!", Batman 139, DC Comic Event)













