animated character, Cuphead, Grim Matchstick, dragon, green scales, fire-breathing, three heads, challenging pose, cartoon style, clouds, castle tower, mid-air battle, exaggerated expressions, vibrant colors, 2D platformer environment, side-view, dynamic action, cel-shaded textures, retro aesthetic, bright flames, intense eyes, boss fight scene, clear sky, midday sun, high contrast lighting, action-packed composition.