Isamu Ozu (小津 勇, Ozu Isamu) is the human form of Heavenly Saint Blagel (天空聖者ブレイジェル, Tenkū Seija Bureijeru), the ultimate warrior and champion of the Heavenly Saints who wields power over the Ferocious, Raging Fire Element (猛る烈火のエレメント, Takeru Rekka no Eremento). He was well-loved by his allies and family and even though he was their greatest enemy, he was respected among the ranks of the Underground Hades Empire Infershia.
He is also one of the main protagonists of Mahou Sentai Magiranger. He is known as Heavenly Hero Wolzard Fire (天空勇者ウルザードファイヤー, Tenkū Yūsha Uruzādo Faiyā) of the Magirangers.
Blagel took on the human form of Isamu Ozu and married Miyuki Ozu but he soon had to leave his family when the Magitopia/Infershia war escalated. Before he left, Isamu had Miyuki promise him not to reveal the truth about their magic to their children unless otherwise the right time came. Once more a Heavenly Saint, Blagel went against Heavenly Arch Saint Magiel's wishes and battled Infershia directly to protect his family from them.
- Koragg the Knight Wolf - Wolzard's counterpart from Power Rangers Mystic Force. Unlike in Magiranger, the persona was used by two characters.
- Leanbow - Isamu/Blagel's counterpart, and the first Koragg
- Nick Russell - Red Mystic Ranger, who inherited the Koragg persona for a short time.