Jack is the son of Jake a member of the Cross Guard who was killed by the Chess Piece Weasel. Loudmouthed and clumsy Jack is the weakest of Team MAumlR however not by any means the least resolute if not the most and having the least experience. He never misses a chance on training to get stronger. He also has a hopeless crush on every cute girl he can lay his eyes on especially Snow and Dorothy despite how cruelly they treat him. Jack is the one who meets Ginta Toramizu early in his adventure when he and Babbo stumble upon his garden. After Jack helps him beat the Rugelu Brothers a pair of werewolves that were terrorizing Jack039s home to claim the farm039s vegetables he and Ginta becomes best friends and joins Ginta on his journey.