Here's an interesting article:
The story of Pokémon Ultra Sun and Ultra Moon revolves around the player's journey to uncover the secrets behind these Legendary Pokémon and their connection to the Alola region. pokemon solar light and lunar dark wiki
Necrozma, the Psychic-type Legendary Pokémon, is said to be the Dwarf of the Stars. Its name is derived from the Greek word "nekros," meaning death, and "zoe," meaning life. Necrozma has the ability to absorb the light of the stars and use it to fuel its powerful psychic attacks. Here's an interesting article: The story of Pokémon
You're referring to the Pokémon Sun and Moon: Ultra Sun and Ultra Moon wiki! Necrozma has the ability to absorb the light
Solgaleo, the Steel-type Legendary Pokémon, is said to be the embodiment of the sun's light. Its name is derived from the Latin word "sol," meaning sun, and "galeo," meaning helmet. Solgaleo has the ability to create intense sunlight, which can be used to blast its opponents with powerful Solar Beam attacks.