The main character of the fifth generation, Rex has a keen eye and sound judgement. Coupled with his power and personal charisma to lead, Rex has inherited all the strengths of his forefathers. Those who have fought alongside the Spirit Vessels from the beginning say that Rex has inherited Leonhart's looks, talents, and determination; Ladius's honest diligence; Thoma's bright personality; and Duran's sincere empathy. The bloodline having spanned five generations, the original power of the Spirit Vessels (having come from Dyshana's spirit initially) grows stronger and becomes a part of Rex's own soul. He eventually comes to know the reason behind Dyshana's existence and her objectives for the Spirit Vessel. The two have an unspoken understanding, and thus Rex proceeds to battle Summerill, carrying the hopes of the many generations before him.