Playful cartoon style with exaggerated proportions, thick black outlines, and bright, saturated colors. In a Hyrox-style race arena, Sonic the Hedgehog (bright blue, red shoes, white gloves) and Shadow the Hedgehog (jet-black with red streaks, hover shoes, gold wrist rings) are neck-and-neck on side-by-side rowing machines, racing flat-out. Low-angle, wide shot for big drama; both in whimsical, energetic poses: Sonic grinning with wild speed lines and star-shaped sweat drops; Shadow smirking, laser-focused, his shoes glowing as he rows. The rowing machines wobble comically with spinning flywheels that blur into sparkling stars and swoosh lines. Confetti bursts, streamers, and balloons (some shaped like kettlebells) fill the air; each hedgehog wears a tiny party hat. Background: a stylized Hyrox stadium-gym mashup with lane markings, a finish arch, spotlights, and a cheering crowd—no readable text. Candy-gloss highlights, bold shadows, punchy contrast. Full-bleed composition with the characters dominating the frame.

Include exactly one short on-image caption, centered at the bottom in a chunky, playful hand-lettered font (no outline text elsewhere):

Gotta Row Fast — Happy Birthday!

Generated with these themes: Blue hedgehog sonic , Black hedgehog shadow, Hyrox competition, Racing , Rowing machines, and .

Made with ❤️ by AI.