What do you need to become a great sidekick? First off you need a great superhero to follow and fight crime with. Luckily for the boy wonder he hit the jackpot because Batman is the best hero to be the sidekick of. When you’re the sidekick of Batman you get to live in a mansion, a great costume, and also all the wonderful toys you can play with. All you have to do is go out on patrol with the dark knight and help save the day from all those villains trying to take over Gotham City. Not a bad trade off!