10 Postgame Challenges In Pokémon Sun And Moon
6. Get Type: Null And Silvally
Find Gladion at Aether Paradise and he will present you with your very own Type: Null. He’ll also give you a bunch of memory drives that you can use to change the typing of Silvally, Type: Null's evolution.
Type: Null will only evolve into Silvally when leveled up with high happiness. Remember happiness has nothing to do with your partner’s Pokemon Refresh stats; it’s a completely separate and hidden value that can only be increased through methods such as walking with your Pokemon, having your Pokemon massaged in Konikoni City, and leaving your Pokemon to bathe in the hot springs at Poke Pelago’s Isle Avue.
Pro Tip: If you want to check up on Type: Null’s progress, take it to Konikoni City and talk to the veteran next to the massage shop. If she says, "My! It feels incredibly close to you! Nothing makes it happier than being with you!", Type: Null will evolve next time you level it up.