Clive Rosfield is the Archduke of Rosaria's eldest son and Joshua's brother and he is also the Dominant of the dark Eikon, Ifrit. Despite being the firstborn, Clive did not inherit the power of the Fire Eikon Phoenix from his father; the role of its Dominant passed on to the younger Joshua instead. To find a purpose for himself, Clive became the First Shield of Rosaria, tasked with protecting Joshua and blessed by the Phoenix, allowing Clive to use part of its flames.