Pixel Art Battle Motion Sprite Sheet

Create a pixel art battle motion sprite sheet for the given person/character, respecting the image and information provided as much as possible, in a simplified 2-3 head style at 128px. The background must be an actual transparent PNG (RGBA with alpha channel). Arrange in a 4x4. Generate one image for game import following these specs: 128x128px per frame, 512x512px total PNG. 4x4 grid, 16 frames total. No margins, lines, text, or labels between cells. All frames same character/scale, facing right, feet aligned 8px from bottom. Empty space must be alpha 0. Do not draw checkerboards or tile patterns representing transparency. Rows: 1. Idle1, Idle2, Forward1, Forward2; 2. Jump1, Jump2, Punch start, Punch extend; 3. Crouch1, Crouch2, Back1, Back2; 4. Guard1, Guard2, Kick start, Kick extend. Clean 8-bit style, no anti-aliasing. Confirm background is alpha 0 before output.