* ActingForTwo: Richard Divizio as Kano and Kabal, Sal Divita as Nightwolf and the robot ninjas, and John Turk as Shang Tsung and Sub-Zero. John Turk and Becky Gable both played all the masked ninjas in ''Ultimate'' as well.
* AscendedFanon: Ermac was originally a bit of misunderstood text on a debug screen in ''MK''. Fans believed he was going to be a playable character. Midway took the playable bit and canonized it. Likewise, his palette (red) was merely a graphical error. The costume used to record the animations for the masked fighters in the original game was red and if the game couldn't load the right color, it would default to this. When he was made an official character, he was given that same red hue.
* HeAlsoDid, RetroactiveRecognition: One of the lead programmers for the PC/DOS ports of ''MK 3'' was Oren Peli, who would go on to produce/write/direct the original ''ParanormalActivity''.
* OldShame: Three words - [[PortingDisaster Mortal]] [[Horrible/VideoGames Kombat]] [[CreatorBacklash Advance]].
* RomanceOnTheSet: With Lia Montelongo (Sindel) and Brian Glynn (Shao Kahn), who dated until 2001. It may influenced in the fake marriage between the two characters.
* TheOtherDarrin: Only half of the cast from the previous two games returned, namely Richard Divizio (Kano and Baraka), John Parrish (Jax), Tony Marquez (Kung Lao) and Brian Glynn (Shao Kahn), which led to the other returning characters being played by new actors. Ho Sung Pak (Liu Kang) and Elizabeth Malecki (Sonya Blade) were replaced by Eddie Wong and Kerri Hoskins respectively, while John Turk replaced both, Dan Pesina (as Sub-Zero) and Philip Ahn (as Shang Tsung).
** John Turk eventually got to play all the other masked ninjas in ''Ultimate'' (replacing Pesina ''again'') alongside Becky Gable, who replaced Katalin Zamiar as Kitana and the other female ninjas.
** Chris Alexander was brought in to replace Dan Pesina as Johnny Cage in ''Trilogy'', who was one of the few characters needed to fill the entire roster from the first three entries. Averted by Carlos Pesina, whose character Raiden was left out in ''[=MK3=]'' and ''Ultimate'', but brought back in ''Trilogy'' with the same sprite set used in ''[=MK2=]'' (except for the all-new running animation); same as Baraka, who had been played by Richard Divizio and, therefore, came back with his ''MKII'' sprites intact, plus a run animation and a new move.
*** This is also the reason why only four characters (the aforementioned Kano, Jax, Kung Lao and Raiden) have "past" versions of themselves available in the Playstation and Saturn versions.
* UpdatedRerelease: ''Ultimate Mortal Kombat 3'' is Midway's apology for not including [[CreatorsFavorite Scorpion]] in the original ''Mortal Kombat 3''.
** [[{{Nintendo64}} Other]] [[PlayStation consoles]] [[SegaSaturn got]] the DreamMatchGame ''Mortal Kombat Trilogy''.
* UrbanLegendOfZelda:
** You could supposedly get Scorpion, Reptile, Jade, Kitana, and Mileena in vanilla ''[=MK3=]''.
** Brutalities [[AscendedMeme were based on rumors of 100% combos]]. (Which do exist.)
* WhatCouldHaveBeen: [[VideoGame/MortalKombatSpecialForces Tremor]] was slated to appear in ''Trilogy'', but was scrapped in favor of Rain.
** Chameleon was supposed to be in the console versions of ''Ultimate'', but was unfinished due to time constraints. Code of him can be still found in the games.
** Before they were named, Sektor and Cyrax were called Ketchup and Mustard by the team. Sindel's working name can be seen as "Muchacha" in pre-release screenshots.
** Midway [[http://www.hardcoregamer.com/2014/05/02/images-surface-from-cancelled-mortal-kombat-hd-remake/83560/ was going to release]] an HD version of ''Ultimate Mortal Kombat 3'', with new motion capture actors and updated graphics, but said project was cancelled by Warner Bros. when they had acquired the company. Also notable is the fact that Elizabeth Malecki was [[http://www.taneabrooks.com/TaneaBrooks.com/Artist_Gallery/Pages/mortal_kombat.html#9 going to]] [[http://www.taneabrooks.com/TaneaBrooks.com/Artist_Gallery/Pages/mortal_kombat.html#12 reprise]] her role as Sonya Blade, [[TheBusCameBack after years of absence from the franchise]].