A Defender Titan who was killed by Crota during the assault at Mare Imbrium.1
Wei Ning was well known for her directness; it is quite clear from her quotes that she did not back down from a fight.23 She even told Pahanin that she would punch the Darkness itself.4
Eriana-3 was foretold of Wei Ning’s death by a Wizard she captured during the assault on the Moon, who showed her “Wei Ning dead on Crota’s blade.”1 After Wei Ning’s death, Eriana-3 became obsessed with avenging her and eventually gathered a fireteam under Toland to attempt to kill Crota.