Chess Piece Rook Class

Loco is a fictional character in the popular manga and anime series MÄR. She is a former member of the Chess Pieces, the series' main antagonists, and belonged to the rank of Rook, of which she was the strongest. Loco's name means a patron of healers in the religion of Voodoo, a reference to her ÄRM Straw Doll (Spikes and Hammer).

Loco is one of MÄR's most mysterious figures. Acting emotionless at all times, except for the rare show of surprise, Loco finds little importance out of the happenings around her, and prefers to do anything that is seemingly the most successful path to take at the time. Loco's dark personality can also make her cruel at times. She is intelligent and wise, often being able to deduce problems quickly others find difficult or simply unsolvable.