Alignment

Alignment is a categorization of the moral perspective for each character or clan wherever they are good, neutral or evil. Alignment is determined by for whatever reasons each character participates in Mortal Kombat, be it for friends and/or family, personal agendas or a lust for power and domination. Over the course of the story spanning throughout the series, characters are subject to change sides or take no side at all

Good Characters
Most of the central good characters in the series fight for Earthrealm. Others not respresenting Earthrealm either fight alongside their comrades or to defeat a greater evil
 * Ashrah
 * Batman
 * Bo' Rai Cho
 * Captain Marvel
 * Cyrax
 * Ermac
 * The Flash
 * Fortran
 * Fujin
 * Green Lantern
 * Jade
 * Jax
 * Johnny Cage
 * Kai
 * Kenshi
 * Khameleon
 * Kitana
 * Kung Lao
 * Li Mei
 * Liu Kang
 * Mokap
 * Nightwolf
 * Nitara
 * Sareena
 * Shujinko
 * Sindel
 * Sonya
 * Stryker
 * Sub-Zero
 * Superman
 * Taven
 * Wonder Woman

Neutral Characters
Neutral characters serve as the wild cards. They are not particularly concerned with otherworldly conflicts as they are with their own personal agendas and business. Some neutral characters however, possess heroic tendencies, but mostly if it benefits them in some way.
 * Blaze
 * Catwoman
 * Chameleon
 * Dairou
 * Darrius
 * Havik
 * Hotaru
 * Meat
 * Raiden
 * Scorpion
 * Smoke

Evil Characters
Evil characters seek either absolute anarchy, world domination or absolute power and will do anything possible to obtain their selfish goals. Evil characters have much difficulty cooperating together and will quickly betray one another if or when it suits them. Others pretend to be fighting alongside heroes, but often for a much darker purpose and will betray them to shatter their trust and take them down when they're weakened.
 * Baraka
 * Daegon
 * Dark Kahn
 * Darkseid
 * Deathstroke
 * Drahmin
 * Frost
 * Goro
 * Hsu Hao
 * Jarek
 * The Joker
 * Kabal
 * Kano
 * Kintaro
 * Kira
 * Kobra
 * Lex Luthor
 * Mavado
 * Mileena
 * Moloch
 * Motaro
 * Noob Saibot
 * Onaga
 * Quan Chi
 * Rain
 * Reiko
 * Reptile
 * Sektor
 * Shang Tsung
 * Shao Kahn
 * Sheeva
 * Shinnok
 * Tanya