* DuelingGames: With ''VideoGame/MarvelVsCapcom2'' (Online re-release).
* HeyItsThatVoice:
** Creator/PatrickSeitz voices four characters (see "TalkingToHimself").
** Creator/RichardEpcar voices two characters (see "TalkingToHimself").
** The Flash is [[VideoGame/StreetFighterIV Adon]].
** Catwoman is [[VideoGame/WorldOfWarcraft Sylvanas]].
** Creator/MichaelMcConnohie is Kano and {{G|reenLantern}}anthet's cameo.
** TaraPlatt is Wonder Woman.
** Creator/ChristopherCoreySmith is Superman.
* TalkingToHimself:
** Creator/PatrickSeitz is Scorpion, Shao Kahn, Deathstroke, and [[spoiler:Dark Kahn]].
** Creator/RichardEpcar is Raiden and the Joker.
** As stated above, Creator/MichaelMcConnohie is Kano and Ganthet (in a cameo).
** Creator/ChristopherCoreySmith is Superman and the Batcave's computer.
** Dan Washington is Jax and Baraka.
* WhatCouldHaveBeen
** Harley Quinn, Killer Croc, Reptile, and Quan Chi were originally going to be both playable and later DLC. They were left out due to both the deadline ''and'' the collapse of MidwayGames.
** The idea for this game (when it was still the tentative ''Mortal Kombat 8'') was originally to follow the events of ''Armageddon'', with [[KillEmAll most of the cast dying]] in [[VideoGame/MortalKombatArmageddon the Battle of Armageddon]] in order to make way for a new cast. Scorpion and Sub-Zero would be survivors of the event. When it instead became a crossover with DC, these plot elements were modified and reworked into ''[[VideoGame/MortalKombat9 MK9]]'', only that instead of the ninjas, it ended up becoming Raiden and Shao Kahn.