Highly detailed biomechanical skull and machinery tattoo on an arm.

A highly detailed full-sleeve biomechanical tattoo design featuring a realistic human skull as the central focal point. The skull is partially fused with metallic parts, gears, and cybernetic enhancements. Mechanical tubes, pistons, and sinewy cables extend outward and wrap around the arm in an organic, flowing pattern. Sharp contrasts between bone and steel textures. The design blends anatomical realism with futuristic machinery, incorporating glowing elements, complex textures, and layered mechanical forms. Dark, high-contrast shading with 3D depth, suitable for a tattoo stencil or concept art. Viewed from multiple sleeve angles See more