Birth of the Breast Dragon Emperor[]
Armaros was briefly mentioned in Volume 5 by Azazel when commenting on technical assistance to the Devils.
The Legend of Oppai Dragon and his Lively Companions[]
Armaros first appeared in Volume 15. He was briefly mentioned by Penemue as one of the Fallen Angel leaders who survived, before appearing in front of Issei and Baraqiel. Armaros "attacked" Issei as he was acting as a villain from a Japanese tokusatsu hero program, to which Baraqiel had to apologize for.
Red Dragon Emperor of the Blazing Truth × White Dragon Emperor of the Morning Star: The True Dragon(s) of the Kuoh Academy[]
Armaros reappears in Volume 22 as a participant in the Azazel Cup in Baraqiel's team as his Queen. During their match against Team Red Dragon Emperor of the Blazing Truth, he fought against Rossweisse, as initially overwhelmed her due to his anti-magic capabilities. However, he was forced on the defensive when Bina Lessthan interfered in their fight.