Michaelis was deployed following duel over Miorine between Suletta and Shaddiq. Michaelis was able to take out Chuchu's Demi Trainer, and it was able to almost isolate XVX-016 Gundam Aerial, however it was shot in the head and its antenna by Demi Trainer.
It was deployed again to fight against Guel's MD-0064 Darilbalde in full power after removing its regulation limiters while the rest of the Grassley team fends off the Dominicus for Henao to relocate Sarius. Despite its fully powered mode that overwhelmed and heavily damaged the Darilbalde, it was defeated by the Daribalde's beam composite arms severing its limbs.