Mismagius is a possible Poké-Ball Pokémon in Super Smash Stadium, debuting close to the end of Season 1, alongside Game Show Arena. It commits a move error in this game in that it uses BOTH versions of Curse when released, cursing opponents while buffing you with the non-Ghost version (but slowing you down).
All canon Pokémon are available in Tropes vs. Women in Pokémon Training, including Mismagius; however, Mismagius can't be found in the wild. It's mostly unchanged from canon.