For those who have not completed Xenoblade Chronicles X, this page may contain spoilers regarding the plot. Discretion is advised.
During the final dialogues in Attack on Biahno Hills, Suriella is revealed to have died shortly after the White Whale landed on Mira. Shortly afterwards, the Definian HT665: Erio disguised herself as Suriella to infiltrate New Los Angeles as a Ganglion spy. However, the Definian begins to consider defecting from the Ganglion. After the party defeats her partner, she is taken into custody by Lara Nara.