Kai made his debut in Mortal Kombat 4 as a nimble and agile Nepali fighter of the Gurkha warrior class. Like Liu Kang, he is a Shaolin monk and skilled martial artist with the ability to use fire in battle.
In Mortal Kombat 4, Kai wears a dark red headband, sash, belt, and shin guards. He has baggy black pants, grey wristbands, and has white tiger stripes on his body.
In Mortal KombatEdit
Kai was once a member of the secretive White Lotus Society. He had learned his skills from the great masters throughout Asia. He journeyed to the far east where he met Liu Kang who happened to be in America at the time, recruiting to train a new generation of Shaolin warriors. During the events of Mortal Kombat 4, Kai went with Liu Kang to China to become a Shaolin warrior. However his training was interrupted with the invasion of Shinnok and his dark legion into Edenia. Liu Kang and Kai found Fujin who fell from the Heavens while battling the forces of Shinnok. The god of wind was unconscious and was about to be killed by Shinnok's Army of Darkness, when Liu Kang and Kai interrupted the demons and saved him.
Later on, Kai and Liu Kang joined Raiden in his efforts against Shinnok. Once Shinnok was beaten, Kai decided to wander the Earth on a quest for self-enlightenment. As a blessing from Raiden as he prepared to ascend to Elder God, Raiden entrusted his Lightning Staff to Kai to help him on his quest, and perhaps find his way into immortality.
On Sora's TeamEdit
Kai likes Sora's team of how fun they all are, but remains in his world to keep it safe from unwanted guests.