Bo' Rai Cho taught several great warriors, including Liu Kang, Shujinko and the legendary Muso Gonnosuke. Bo' Rai Cho originates from Outworld but has not, however, participated in a Mortal Kombat tournament, knowing that if he wins, his victory would be in the name of Shao Kahn for his status as an Outworlder. So he instead chose to utilize his fighting skills to train Earthrealm warriors. He rose when the Deadly Alliance was formed.
When his student Liu Kang was murdered by the sorcerers Quan Chi and Shang Tsung, he began training Liu Kang's fellow Shaolin Monk, Kung Lao, so that he could slay Shang Tsung. While the other Earthrealm warriors prepared for an attack against the Deadly Alliance, Bo' Rai Cho spied on Shang Tsung's palace and rescued Li Mei, another fellow native of Outworld. During the events of Mortal Kombat: Deception, he regrouped with other Earthrealm warriors led by the Thunder God Raiden and retreated.
Later, he participated in the battle against Onaga and the Battle of Armageddon, sided with the Forces of Light, but ultimately died while trying to reach the top of the Pyramid of Argus.