Kuma was once an abandened pup in the forests of the Mishima estate.Heihachi found Kuma and took him in as his pet.When Kuma reached adulthood,Heihachi built him an outhouse to cater for his impressively large frame.Heihachi taught the bear simple commands and hand signals which Kuma picked up at alarming speed.Kuma was even taught rudimental Japanese!
After 2 years,Heihachi realised the power contained in Kuma and so taught him in the arts of Kuma Shinken.None of Heihachi's associates could understand why Kuma was so intelligent which lead to a lot of them fleeing the estate in fear of the bear's intellect.This was further reinforced by Kuma's penchant for the taste of human flesh!
Despite Kuma's unflinching loyalty to his master,Kuma liked to leave the side of Heihachi to sleep,even during the summer.This lazy approach has meant that his fighting style has never really matured and is very disjointed.This was demonstrated in the first tournament where Kuma was easily defeated by Paul Phoenix.Kuma was mightily impressed with Paul's fighting prowess as he thought that the only strong human was Heihachi.Heihachi too was defeated and so the pair retreated into a mountain dojo to re-train.
Kuma travelled to the second tournament with his master vowing to this time destroy Paul Phoenix.If anyone gets in his way,he will eat them!!!