Black and grey tattoo concept presented as a diptych of myth-infused imagery, rendered in tight linework and atmospheric shading. On the left, a hooded figure stands with a dog head emerging at the cloak’s edge, evoking Cerberus, the multi-headed guardian who guards the threshold of the underworld. The silhouette is carved from deep blacks and subtle grey gradients, with textured fur hints and folds of fabric that create a powerful negative-space halo around the central form. On the right, a second hooded figure wears a modern gas mask, a contemporary reinterpretation of chthonic death figures, reminiscent of Thanatos or Charon, translating ancient symbolism into a present-day motif about mortality, danger, and inevitability. The pairing invites viewers to contemplate protection versus peril, the passage between worlds, and the tension between ancient myth and modern anxieties. The composition relies on contrast, controlled negative space, and carefully placed highlights to achieve a bold yet refined look that works well as a tattoo design for meaningful tattoos, black and grey realism, or even fine line tattoo depending on client preference. The artwork emphasizes texture: the rough cloak, the smooth mask chrome, the glint of the dog’s eye, all of which adds depth to the piece while preserving legibility on skin. This is an AI-generated concept that uses digital rendering to explore mythic storytelling through ink, offering a fresh perspective for tattoo artists and clients seeking a custom tattoo design with strong symbolic content: Cerberus representing protection, boundary, and the crossing from life to death; Thanatos or Charon symbolizing mortality and fate in a contemporary framework. Because the image is dark and saturated with black ink, the composition is ideally suited for cover-up applications, allowing a practitioner to replace an older piece with a dense, mythologically charged narrative. The recurring motif of dual figures strengthens the narrative and makes room for extension into larger body art or sleeve concepts, while preserving readability as a tattoo design. Keywords woven into this description—tattoo, tattoo design, meaningful tattoos, black and grey, myth, Cerberus, Thanatos, modern interpretation, cover-up, custom tattoo design—enhance discoverability for readers seeking gothic, myth-inspired ink.