Super Smash Flash features a wide variety of characters from Nintendo and other game company's franchises, alongside a couple of manga/anime characters. In 1 there were also 2 Original Characters and 1 character from an animated movie. Between the first game and the new characters confirmed for the second, there are 60 playable characters in the whole series (counting Sheik).
- For the playable characters who appeared in Super Smash Flash, go here.
- For the playable characters added in Super Smash Flash 2, go here.
- For the non-playable characters (bosses, Assist Trophies, summonable Pokémon, etc.), go here.
As there are characters that were planned to be new additions in 2 pre-retool, but haven't been confirmed or deconfirmed yet post-retool, those characters will not be listed at the moment.