Enid is an apprentice Xero adopted at some point following Kareleinne-08's defeat. She was trained by Xero in both his and Omega's fighting skills.
Enid and Xero were later attack by a massive battalion of Vorpal Soldiers. Xero told Enid that someone else had been pulling the strings of MBORF and that she must live on to take down his new order.
The two then equipped their Cervical Armors and charged at the enemy soldiers. Though the fight is not shown, the post-credits scene shows Enid glancing at a picture of Bolverk Squad before heading off to take down the New Order.