A monstrous dark Pokémon Blastoise, colossal in size, unleashing a torrent of water with immense power, its wet, intricately detailed shell appearing twisted and macabre. Horror elements are woven into its design, featuring intricate textures and dramatic, high-contrast lighting casting ominous shadows. This hyperrealistic and photorealistic scene is captured with cinematic finesse in 8k resolution, focusing on the fierce intensity of its water blast and the daunting presence of the creature in a 9:16 aspect ratio.