text: In the early 1960s, at the advent of comics' so-called Silver Age, a new round of superhero sidekicks made their debuts, including Rick Jones, Aqualad, Snapper Carr, Kid Flash, and Wonder Girl. Indeed, the original Teen Titans superhero team, appearing in 1964, was composed entirely of sidekicks. (Marvel Comics mostly got around the teen sidekick quandary by creating a selection of super-powered teenagers — heroes in their own right, such as Spider-Man, the second Human Torch, and the X-Men.)
  Most of the Golden Age and Silver Age sidekicks have subsequently evolved into mature heroes in their own right or have been killed off; and in the 1980s, 1990s, and 2000s, some new sidekicks have come into being. Certain heroes seem to attract serial sidekicks, notably Batman, Captain America, and The Flash. There have been at least five iterations of Robin; while Captain America has had a diverse array of sidekick successors to Bucky, including the Falcon, Demolition Man, Free Spirit, and Jack Flag.
  Conversely, the character Rick Jones is virtually a "sidekick-for-hire," having assisted a number of different heroes during his career, starting with the Hulk, moving onto Captain America (when he briefly became the second Bucky), then the first Captain Marvel, Rom Spaceknight, and finally the third Captain Marvel (Genis).