By the time the X were contained, Raven Beak learned that Samus Aran had already exterminated every Metroid on SR388. Eventually every Chozo on ZDR except Raven Beak and Quiet Robe were assimilated by the X, forcing Raven Beak to quarantine them within Elun and rely on Robot Chozo Soldiers instead. This pandemic forced Raven Beak to put his Metroid plot on hold as he fought to contain the X. Upon returning to ZDR, Raven Beak learned that one of his soldiers had been infected by a dangerous X Parasite while on SR388. Raven Beak discovers the X have infiltrated ZDR. Raven Beak's forces then retreated to ZDR with Quiet Robe, planning to return to SR388 for Metroid samples a later date. Upon hearing the Thoha wanted to detonate SR388 along with every Metroid on it, Raven Beak ordered a massacre, sparing only Quiet Robe for his bioengineering skills and ability to control Metroids. However, Raven Beak still saw use in the Metroids and believed they symbolized a power great enough to bring order to the galaxy.

After the Metroids went out of control, the Thoha collaborated with Raven Beak's Mawkin tribe to help seal away the Metroids. The Chozo Memories depict Raven Beak's interactions with the Thoha Chozo on SR388. Raven Beak orders the slaughter of the Thoha. The eleventh Memory only unlocks if all items have been acquired on the save file, at which point it will appear when the tenth Memory is selected.

Raven Beak appears in the tenth and eleventh Chozo Memories in the game. His special Mawkin heritage greatly enhanced Samus' fighting prowess and instincts. When Samus Aran was adopted by the Chozo on Zebes, he alongside a Thoha Chozo (thought to be Gray Voice) voluntarily contributed his DNA to infuse into Samus. Raven Beak is a high-ranking leader of the Mawkin tribe.

Crows zero 3 final battle