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Jacked April O'Neil's giant bicep tearing through her jumpsuit sleeve

A huge vein-covered bicep and fist burst through the torn sleeve of April O'Neil's yellow jumpsuit, slick with green slime
April can't stop the growing as the mutagen swells her arm until the sleeve rips — a page from April Muscle Up!, an AI 3D muscle growth comic.

Read the comic →From part 1, page 11 of April Muscle Up!. The comics are for readers 18+.

A huge vein-covered bicep and fist bulge through a tearing yellow jumpsuit sleeve, glistening with green slime, with throb lettering. April O'Neil is done being rescued. She has a canister of mutagen. The picture comes from April Muscle Up!, a photoreal 3D muscle growth comic made with AI tools by 3DMuscleComics.

Character
April O'Neil (Teenage Mutant Ninja Turtles fan art)
Comic
April Muscle Up!
Image
1200 × 2150 JPEG, AI-generated 3D art
Credit
© 2026 3DMuscleComics.com · licence & reuse

More April O'Neil

Grinning Irma Langinstein in glasses and a blue sweater with bulging arms flexes in a green-lit TGRI lab.Strong Irma flexing in the TGRI lab as her sweater strainsApril O'Neil in a yellow jumpsuit smiles slyly while holding a glowing green mutagen canister in an underground labDetermined April O'Neil eyes a glowing mutagen canister in the lab

All 3 April O'Neil pictures →

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