In each gen there's an "main" legend and an ultra rare and ultra cute legend. "Main" is on left and cute is on right for each gen.
Gen 1: mewtwo mew
Gen 2: lugia celebi
Gen 3: rayquaza jirachi
Gen 4: arceus phione
Gen 1: mewtwo mew
Gen 2: lugia celebi
Gen 3: rayquaza jirachi
Gen 4: arceus phione