Gaelio passed his Schwalbe Graze to Ein Dalton when he switched to the ASW-G-66 Gundam Kimaris. Ein proceeded to tune the machine for his use, and first fought using it during the battle in the space region near the Dort Colonies. In this battle, Ein's Schwalbe Graze initially assisted the Kimaris in attacking the Barbatos, then it went off to intercept the spacecraft that Barbatos was trying to protect. However, this failed as the Isaribi came between it and the spacecraft. The machine later engaged the EB-06/tc2 Ryusei-Go, but the fight was cut short when Ein left to protect the Kimaris. Ein's Schwalbe Graze then took a hit meant for Kimaris, and lost its hip-mounted Flight Units. The two machines subsequently retreated when the Arianrhod Fleet arrived at the scene.

Ein's Schwalbe Graze next appeared alongside the Kimaris to stop Tekkadan from entering the Earth's atmosphere, and it fought the Ryusei-Go again. Using its Wire Claw, Ein's Schwalbe Graze managed to restrain and subdue the latter. However, Ein was forced to abandon the fight to protect Kimaris from Barbatos's attack. During the process, Ein's Schwalbe Graze was pierced in its mid-section by the Gungnir lance thrown by Barbatos, and Ein himself suffered severe injuries. The Schwalbe Graze's cockpit block later ejected from the machine and was caught by Kimaris. Ein's Schwalbe Graze was then never seen again as he switched to the EB-AX2 Graze Ein. Later, McGillis passed his own Schwalbe Graze to his subordinate, Isurugi Camice.