Oniro

Oniro is a character from the cartoon Mortal Kombat: Defenders of the Realm. He appears in the episode Old Friends Never Die as the nemesis of Sub-Zero.

Origin
Oniro was the previous Grand Master of the Lin Kuei clan; a clan of ninjas. He was also a skilled fighter and was strong enough to break large rocks with his own hands. Oniro wore a grey version of the clan's uniform.

Clan's Automation
Oniro commanded the automation of the Lin Kuei. Two warriors, Cyrax and Sektor, underwent the process willingly. Everybody else was automated except for Oniro. Sub-Zero and Smoke were the only clansmen who refused. They attempted to escape but only Sub-Zero succeeded. Oniro captured Smoke and forced him to undergo automation.

Hunting Sub-Zero
Oniro attempted to hunt Sub-Zero. He used Smoke who was reformed into a cyborg. He was almost successful until Smoked regained his memories. He then turned against the Grand Master. Oniro was shoved into a chasm but he managed to escape by transforming into a bird and then flying away.

Current Status
Oniro is no longer the Grand Master of the Lin Kuei. Sub Zero has assumed his role. Oniro left the clan and he is missing or dead.