Chibi Pixel Battle Sprite Sheet

Goal: Create a pixel-art sprite sheet for a chibi anime fighting game character, suitable for making a looping battle GIF.
Canvas: Square 512×512 image with a pure black background, crisp nearest-neighbor pixel rendering, no grid lines, no labels, no watermark. Arrange the sprites in an even 4×4 sheet, exactly 16 discrete animation frames, each occupying roughly a 128×128 cell with consistent character scale and transparent-feeling empty space around the sprite.
Subject details: The character is a chibi blue-haired martial arts hero, a small super-deformed fighter with oversized head, spiky messy black hair with bright electric-blue highlights, large blue eyes, pale skin, determined eyebrows, white boxing-style gloves, black sleeveless combat outfit with orange trim, black shorts or armored panels, white socks, red-and-white sneakers, and small blue accent details. Keep the design consistent in every frame.
Animation layout: Include exactly 16 separate sprite poses, ordered left to right and top to bottom:
1. idle ready stance facing front-left, fists up;
2. crouched forward run startup, leaning right;
3. standing punch or slash with a bright blue crescent energy arc in front;
4. compact dash pose with one fist extended;
5. high-speed horizontal dash left-to-right with blue motion streaks behind;
6. faster running dash with longer blue speed lines trailing left;
7. close-range orange energy punch sweeping forward;
8. straight punch impact with orange explosion burst at the right edge;
9. spinning kick or hook attack with blue crescent energy on the right;
10. rising diagonal strike, body tilted, blue energy slash trailing around the leg or arm;
11. back-facing spinning attack with circular blue energy swirl around the body;
12. side kick impact with orange explosion burst on the right;
13. low crouch landing or charge pose with fists near the ground;
14. upright guarded stance with one arm extended and small blue energy sparks near the rear hand;
15. front-facing idle combat stance with both fists raised;
16. alternate front-facing idle stance, nearly symmetrical, fists up.
Effects: Use electric blue for speed trails, arcs, and swirling slash effects, plus orange and yellow comic-style impact bursts for hit frames. Energy should be pixelated with jagged edges and bright highlights.
Visual style: 16-bit arcade fighting-game sprite art, cute chibi proportions, bold black outlines, high contrast, limited but saturated palette, sharp pixel edges, dynamic poses, readable silhouette, no anti-aliased painterly softness.
Constraints: Keep exactly 16 frames in a clean 4×4 arrangement, preserve consistent outfit and proportions, do not add text, UI, frame numbers, background scenery, or extra characters.