Mortal Kombat 4, Mortal Kombat Gold Roster

MK4 introduced:
Fujin 
Jarek 
Kai 
Reiko 
Quan Chi 
Shinnok 
Tanya 

MK4 also included the following hidden characters:
Noob Saibot
Meat (a bloody skeleton)

Returning characters

Jax

Johnny Cage

Liu Kang

Raiden

Reptile

Scorpion

Sonya Blade

Sub-Zero

Sub-Boss

Goro

Boss

Shinnok

 Mortal Kombat Gold

Cyrax

Mileena

Kung Lao 

Baraka

Kitana