Quote Originally Posted by Tyndmyr View Post
That's fair, differentiating sidekicks from...expy's? Is that the right term? But yeah, the junior versions don't always work with the adult version.
I just tend to think of them as spin-offs, personally. And there's probably more of them around than there are actual sidekicks. Especially on the Marvel side of things. Spider-Man might never have had a Robin-esque sidekick, but there have been quite a few characters who were Spider-Man at one point or another, plus Spider-Women, alternate universe versions of him, etc.