Board Thread:Questions and Answers/@comment-12794005-20131013131100/@comment-9340689-20140805172030

Well you guys just don't get it! The anime pretty much takes place in an alternate universe. Just because it's canon in the anime doesn't make it canon in the games. In the games, Cosmo never existed.

Cosmo was created by the people who made the anime (not SEGA) and thus is copyrighted to them. SEGA probably isn't even allowed to use Cosmo in the games.

Also, bringing characters back to life is too cliche.