Jarek was once believed to be the last member of the Black Dragon Clan, a group of dangerous thieves. Jarek joined
the clan after befriending Kano, and came to be
trusted by Kano as much as any thief can be trusted by another. Jarek was taught many of Kano's special moves and attacks after he joined the Black Dragon. In MK4, Jarek is hunted down by Special Forces agent
Sonya Blade for crimes against humanity. After Kano's apparent death, Jarek fled to Edenia.
In MK: Armageddon,
Shinnok's attempt to take control of the realms seemed to leave him no other choice, and so Jarek joined forces with his sworn enemies, Sonya Blade and
Jackson Briggs. Jarek also appears as the boss of the third level in Mortal Kombat: Special Forces.