To get Lycanroc's Midnight Form, evolve Rockruff at night. The time of night and day varies per region - check the in-game map for when it is light and dark respectively.

According to Pokemon GO Hub, Lycanroc's Midnight Form has different learnable moves. Early measurements also seem to point to Midnight Lycanroc having higher maximum defense and stamina stats.

Wanting to get your hands on all three of the Lycanroc variants? Here's how to do so in Pokemon Scarlet & Violet.

Depending on when you evolve your Rockruff in Pokémon Go, you’ll get different forms. Our guide covers the Midday, Midnight, and Dusk Lycanroc forms.