The skies shook and threatened to fall as several powerful Gods clashed against each other. Several gigantic figures exchanged blows at a speed that most could not follow. The ones that were leading the fight against Pheher were Dardan, Hadrion and Leon.
As the Beast God, it was trivial for Dardan to increase his size without losing any combat strength, unlike some other Gods that would be out of their league because they would be directing their attention to keeping an enlarged size while fighting intensely.
As for Leon, with his understanding of the Law of Gigantification that he gained from Somonax, it was not a problem for him to increase his size for an extended period of time.
As for Hadrion, he was a Dragon God. His body was his greatest asset, so it was only natural that when he transformed into his true form, he was already gigantic in the first place.