Leon is high skilled yo-yo player.Leon has never lost to anyone except Timothy or Micheal. He is widly regarded for his skill with the yo-yo. His spirit companion, El Salvador Blanke, is quite a ferocious spirit, known for its overwhelming inferno this creature has a fondness for making a spicy meatball.
His love interest, Yuri Yurimoto, is also the antagonist of the show, her colour palette, upon noticing is actually an inverted of his colour Palette, Leon that is, not El Savlador Blanke.