A cinematic depiction of a demonic merman with a maniacal grin, his humanoid form casting an intimidating presence. His eyes, a piercing shade of yellow, bore into the darkness, contrasting starkly against his human skin tone. The dynamic lighting highlights the intense, melancholic contours of his face, adding depth and mystery to his expression. Set against a shadowy, ominous background that hints at the abyss below, the scene captures a haunting, otherworldly atmosphere with a touch of surreal elegance.