Wonder Woman's younger sister Wonder Girl made her first appearance outside the "Wonder Woman" book in "The Brave and the Bold" #60 (July 1965) as a member of a "junior Justice League" called the Teen Titans, consisting of Robin (Dick Grayson), Kid Flash (Wally West), and Aqualad (the sidekicks of Batman, The Flash, and Aquaman, respectively). After next being featured in "Showcase" #59 (December 1965), the Teen Titans were spun off into their own series with "Teen Titans" #1, cover-dated February 1966.