The following contains spoilers for Arcane season 2 episode 3, “Finally Got The Name Right,” now streaming on NetflixArcane has been steadily teasing a werewolf-looking creature throughout act 1, which seems to be an established character from League of Legends. The critically acclaimed animated series has introduced audiences to the world of Runeterra, a massive realm of impressive magic and advanced technology. Arcane has kept the focus largely on the warring cities of Piltover and Zaun, featuring many of the characters central to that region in leading roles. Arcane season 2 seems to be expanding the scope of the show, however.

https://screenrant.com/arcane-werewolf-beast-vander-theory-explained/