Reep' Tchk' Tchk, or Reep to his friends, was born to war, and has known little else. His parents were Guerilla fighters, and they spent their lifetime (and ultimately their lives) trying to drive out the invaders so that the Meerk could be free.
After watching his parents pay the ultimate price, Reep decided that he wanted no part of the armed uprising, and fled for safer grounds.
Fleeing to the less-attacked areas, Reep found a girl and settled down. Everything was fine until the day the Makhor came to his village and began slaughtering Meerk.
He watched his daughter fall, as he had so long ago. He saw his wife, a dozen arrows having pierced her body. Something in him snapped. He smashed into the Makhor who had just stabbed his daughter, and he will never forget the look on the Makhor's face when he his him, snapping his neck and sending him crashing to the ground.
Though he managed to clear his immediate area, Reep likely would have died had the local resistance not arrived to help him save the village.
Reep joined on the spot, and became something of a legend among the Makhor stationed in the area. "Gray Render" they called him, due to his gray fur and his habit of tearing his enemies apart.