Aeolus

Aeolus is the new possessor of Model H in Mega Man ZX Advent. He is fought in the Floating Ruins.

Personality
Aeolus is likely to be harsh to other Megamen he encounters who he thinks are weaker than him. He is arrogant and is a perfectionist and tries his best not to make a mistake, but makes one anyways by underestimating Grey/Ashe. He sees himself as one of the strongest Megamen, other than Atlas, Siarnaq, and Thetis, Megamen who he does not despise.

His behavior, especially his dedication to perfection and detail almost exactly mirrors Sage Harpuia from the Megaman Zero series, whom Model H is based off, the only exception being his lack of compassion and honor, which Harpuia was recognized for. This is in contrast to the other Megamen in ZX Advent, who do not exhibit character traits that their Biometals were associated with.

Biometal Era
Spoiler warning: Details of plots, secrets and/or endings may follow.

Aeolus makes his appearance after Grey/Ashe defeats Rospark and witnesses a Raider's soul being absorbed into Model W, accompanied by Siarnaq. Aeolus meets the player once more on the Floating Ruins, where another Model W was found to be disturbing the gravity in the area, but loses, and escapes with the Model W fragment.

Aeolus appears in a flashback shown by the cipher, along with all the other Biometal users (excluding Grey/Ashe). He appears once more before the player faces Ouroborous, along with Atlas, Siarnaq, and Thetis, trying to stop Grey/Ashe from advancing (Ironically, he is called an idiot when he retorts that Albert using them was a "trifling technicality"). However, a timed arrival of Aile/Vent distracts the four long enough for Grey/Ashe to get to the center of Ouroborous. It is then revealed that the four Biometals, including Model H, was stolen prior to Mega Man ZX Advent and was given away. They start battling afterwards.

After Ouroborous starts falling apart, Model Z decides to take down the enemy Mega Men by himself, and allows Aile/Vent to go rescue Grey/Ashe, who fainted after the battle. Model Z manages to freeze the four Biometals, which freezes the users themselves. The conclusion of the battle is unknown, since Aile/Vent did not mention anything about Model Z during the ending. However, if the player beats hard mode, then a secret ending shows the 4 Enemy Mega Men alive and well, in their MegaMerged form. (It's also implied that the original immortal Reploid Data was inserted into them, as, right after Master Thomas asked Master Mikhail what he think happened to the original immortal Reploid data, they showed up).