Many years ago a nameless hero sacrificed himself, along with various monster parts, into Ilvir's Pit of Sludge, in hope that he would be reborn as an Ivashu. One of Ilvir's children.

His sacrifice was rewarded.

Sabretooth emerged from a sludge pit, a unique humanoid Ivashu able to pass as human in bad light. He has no real memories of his previous life or lives but is a quick learner, curious, dangerous and ready to leave from the snow-capped northern mountains he has been living into the civilized world.