Dark Abyssal Behemoth

character: nothing_there, masterpiece, best quality, ultra-detailed, highres, concept art, creature design, digital painting, dark fantasy art, macabre, body horror, painterly style, 1monster, solo, full body, standing, imposing posture, demonic creature, grotesque abomination, mutant beast, humanoid monster, horned head, large curved horns, ram horns, multiple horns, glowing white eyes, sharp teeth, monster jaws, black smoke emanating from head, shadowy hair mane, split torso, giant mouth on stomach, vertical torso maw, rows of sharp teeth on chest, fleshy tendrils, red tentacles emerging from stomach, exposed muscle, fleshy interior, grey skin, muscular build, long elongated arms, sharp claws, large monster hands, spiked forearms, bone crust on arms, digitigrade legs, monster feet, hooved feet, bone spikes on legs, long fleshy tail, whip-like tail, spiked tail, tentacle tail, red flesh tail, dark world, demon world, hellscape, underworld, ominous environment, dark shadowy background, creepy atmosphere, abyssal realm, muted color palette, grey and red color scheme, fleshy red details, dark grey skin, dramatic lighting, eerie glow, Seinen manga style, fantasia, medieval, ultra-detailed illustration, dynamic composition, sharp outlines, intricate details, dreamy purple tone, watercolor-like uneven brushworks, collaged background, retro manga style