Pixel Art Sprite Sheet Generator

Convert the character in Image 1 into a high-quality 2D pixel game character, generating a square Sprite Sheet with a 4x4 layout totaling 16 frames of continuous animation. Each cell size must be identical. The sequence plays from left to right, top to bottom. Strictly preserve the character's face, hair, body type, clothing colors, signature accessories, and weapon structure. Use the same pixel ratio, character size, orientation, and color palette for all 16 frames. The character performs a single sword swing / jump / roll / spellcast / pounce animation. Frames 1-3 are idle and charging; 4-7 are center of gravity shift and action start; 8-10 are the main attack and power release; 11-13 show inertia and recovery; 14-16 return to idle. Frame 16 should transition naturally back to Frame 1. Only change joints, outlines, clothing flow, hair, and weapon position required for the movement. Maintain continuous movement direction and force relationships. Keep the same camera position, character scale, baseline, and center for all cells. Ensure the full character is shown without cropping. Prioritize transparent backgrounds, otherwise use a solid color for keying. Avoid textures, grids, numbers, or text. Use sharp pixel edges with a limited palette and uniform density. No blurring, anti-aliasing, semi-realistic rendering, or perspective changes.