In the middle of the Monster Legends Multiverse, there's an ancient city only accessible through the Rainbow Bridge. Anyone can walk down the bridge, but only a few chosen monsters can cross the gates at the end of it and enter the ancient city. It is Olnir's job to decide who comes in!

Olnir is Thunder Heavy Attacker with low cooldown skills who can apply Shock to enemies and Shock Hater to herself and blast everyone! She can also revive an ally, but not for free: She will sacrifice herself. At the beginning of every battle, Olnir will cast an Immunity to Tortures upon her allies.