One of the Superhero Genre's favorite gimmicks is the sidekick. They are plot device, exposition conduit, deus ex machina, and convenient hostage, all in one. It begs the question, who did it best?
Batfans and Flashfans: cool your jets. This ain't about how Damien stacks up against Tim, or Wallace v. Bart. This is about The Sidekick in general. And no, it's not all-inclusive. The site's polls don't support that many options. Feel free to call out the unrecognized.