Eir

Eir is the leader of the Fremennik spiritual realm and is a character involved in the Blood Runs Deep quest.

When the player "dies" after being crushed by rocks twice during the quest, they are welcomed by Eir who explains you are in the realm of the fallen warriors. Afterwards, a human Nial Swiftfling and Asleif appear and you "catch up" on previous experiences during Glorious Memories.

After speaking with Nial and Asleif, Eir transports you back to RuneScape.

Once the quest is complete you cannot return to the Fremennik spiritual realm and cannot see her again.

Trivia

 * Eir seems to be based on a figure in Norse mythology of the same name. In Norse mythology she is a goddess and/or valkyrie, which escorts those slain in battle to the afterlife.
 * She mentions she and the player might meet again at "The End of Things". This is possibly a reference to the Ragnarök, a battle between the gods in Norse mythology that ends up destroying the world. This hints at a second God Wars. However, another viable possibility could be she is referencing the fact that the player will meet her again after the player dies.