Lucas was an insane,psychic child,like Ness. Together he and Ness killed many people.
The first time Luigi saw them was in an ally in episode 4, playing together and laughing,
creating an inoccent demeanour around them. Ironically they gave hope to Luigi to fight
the butcher when they, in fact WERE the butcher, well BUTCHERS. The next time they were
seen was in the final episode shortly after the creature, the mr.game and watches had fused into
was destroyed. They had sewn all of their victims back together "like trophys", as luigi said. Lucas was
wielding a snake-like weapon while Lucas had his bat, Kirby then came and revealed that Ness and Lucas
were his progenies. After luigi supposedly killed Kirby with green fire- balls ,they dissapeared Kirby reappeared
at the end of the finale ,Lucas was nowhere to be found, thoughon top of Kirby's head was Ness`s blood-coverd hat...