Page "Sidekick" Paragraph 26

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.