In the reforging Tyr questline, we meet an alternative version of an old friend from Legion. Known as Runas the Shamed in our timeline, in this different timeline, he's known as Runas the Bright!
In our timeline, Runas the Shamed was a Nightfallen, a mana-addicted Nightborne that we met during the story of Azsuna. Runas was ashamed to be caught draining dragon whelplings of their mana, and agreed to help the Blue Dragonflight in the area to make amends. At the time, the dragon Senegos seemed to be dying, but Runas helped us redirect mana to the flight, revitalizing Senegos and allowing the already ancient dragon to live a few more years. It was thanks to Runas's help that Senegos got to see the Dragon Isles again.
Sadly, Runas himself completely succumbed to his hunger, and transformed into a mindless withered.
When we visit an alternative past version of the Nighthold during the Reforging Tyr questline, we run into a perfectly healthy Runas! Here, he is happily researching Tyr's disc on behalf of the alternative timeline Elisande. According to Alydrus' Research Notes, which can be found nearby, Runas is considered one of the more promising researchers working on the project.
Runas himself also seems extremely happy and at peace, and quite willing to let us pass. In fact, he senses a