AI-generated tattoo project concept. This dark, sci-fi motif presents a cybernetic limb design built from interlocking rails, gears, tubes, and plates, with a central green optic core that glows like a power source. The composition follows a strong vertical line, offering a dramatic canvas for a larger forearm, sleeve, or back piece. Rendered in black and grey, the artwork relies on high-contrast shading, crisp line work, and fine detail to convey metal tessellation, jointed mechanics, and layered depth. A pattern-driven architecture drives the rhythm of the design, with curved supports and linear rails converging toward the core and creating a sense of momentum. The green core can symbolize energy, sight, or inner power, while the surrounding machinery evokes transformation, resilience, and the fusion of flesh and machine. From a tattoo-design perspective, the piece sits comfortably in realistic, black-and-grey ink, with technical linework suited for a custom tattoo design that makes a bold visual impact. It speaks to meaningful tattoos for those drawn to futuristic symbolism, industrial aesthetics, and the idea of personal metamorphosis. If used as a cover-up, the dense shading and negative space provide strong masking potential while preserving a striking, pattern-rich silhouette. Acknowledging its AI origin, this concept is a ready-to-ink project that can be adapted to different placements and scales, from detailed forearm panels to full sleeves, and it pairs well with Japanese style tattoo elements or cyberpunk vibes while remaining applicable to both small tattoos and larger body art. In addition, the design accommodates various tattoo genres, from fine line tattoo accents to bold black work, and it can be positioned as a statement piece within the broader canon of ink, including lotus flower tattoo or rose tattoo design motifs if a client desires a more symbolic, nature-inflected look, or as a modern infinity tattoo inspired sleeve concept, thereby expanding its potential as a versatile custom tattoo design for body art.