Albus Dumbledore isn’t in Hogwarts Legacy. This is because the game takes place in 1890, while Dumbledore’s first year at Hogwarts School of Witchcraft and Wizardry was in 1892. At this point, he’d only be around nine-years-old. So, you won’t see him around during your journey through the school and surrounding countryside.
Atlas is an action-rpg with rogue-like elements where you use your ability to control the ground to fight the enemies and move through procedurally generated worlds.
