These teeth

A monstrous entity with multiple eyes and a gaping maw appears in a dark, red-hued environment, then transforms into a large, shadowy figure with a wide, toothy grin against a cloudy sky. A character with glowing red eyes and long dark hair is shown in close-up, followed by a scene of a figure with a red, glowing mark on their hand. The sequence ends with a character standing before a large, red moon, their body partially consumed by a dark, red energy, and a final shot of a green-skinned figure behind vertical bars.