Playful, funny cartoon scene with thick black outlines, exaggerated proportions, and bright saturated colors. In a rolling green hill-and-lake landscape, a speedy blue hedgehog triathlete appears along a looping course:

- In the lake: the hedgehog swims with a pizza-slice float, pepperoni buoys bobbing, water splashing energetically.

- Uphill: the hedgehog rides a bike with pizza-slice wheels, legs a blur, goofy grin, sweat drops flying.

- Foreground: the hedgehog sprints while pushing a Hyrox sled stacked with cheese blocks and pizza boxes; a nearby station shows “HYROX” on a playful arch with cartoon cones, wall-ball target, and a rower.

On a nearby grassy knoll, Wallace and Gromit cheer from a picnic blanket, Wallace waving a cheese wedge foam finger and offering a slice; Gromit holds a stopwatch and a slice on a plate. Seagulls swoop with pizza crusts; the sun glows like a cheesy margherita. Crisp, punchy lighting, bold color blocks, dynamic motion lines, and confetti sprinkles in the air for birthday vibes. No logos apart from the HYROX sign.

Small on-image caption (one line), in chunky, hand-lettered text on a curved mini-banner near the bottom:

“Have a wheelie cheesy birthday!”

Generated with these themes: Blue hedgehog, Triathlon , Hyrox, Pizza, Hills, Lakes, Wallace and gromit, and .

Made with ❤️ by AI.