RKS is also how you pronounce Arceus. And I love this guy's description.
>When Type: Null gains a partner it can trust, it deliberately destroys the restraining device it wears. Once released from that heavy mask, the Pokémon’s speed increases substantially. Freed of the restraining effects of its mask, Silvally’s senses are heightened, and it reverts to its natural temperament. It has a wild nature, but it will obey a Trainer that it trusts. And to protect that Trainer from danger, it will put its own life on the line. Silvally is said to have been created to oppose a threat…
>By inserting exclusive items into the drive on Silvally’s head, its RKS System can be activated, causing Silvally’s somatic cells to mutate and glow. The RKS System enables it to change its type, and its cells glow with different colors of light, depending on its type.
Why can't I have loyal chimera as my starter?