"We're all trying to be heroes, so while rivalries are fine and dandy y'know but, it's more important that we work together since we'll have to eventually. So on the way there, you youngins are going to need help along the way so I'll whip ya into shape!"
Reogun is a young man of average height with light skin. Due to his quirk he takes on the appearance of kemonomimi or humanoid lion having fangs and a lion's tail. When his quirk his active his hair catches fire and grows around his head and neck giving him the appearance of a lion's mane, however when his quirk isn't active, his hair is shown to still have a wild fashion but only covering his head and is light brownish color.
Much like a lion, Reogun has both a brave and prideful personality being proud of his strength and willing to fight anyone to the bitter end, even if that means giving up his life in the process. With this, Reogun is a rather hot-blooded person on the level as that of Katsuki Bakugo. Though through his pride he has a rivalry with other animal quirk users at 1A or anyone he deems to be a 'worthy opponent' and aims to best him before their time at U.A. is over.
Reogun is well known for his rowdy personality and love for rough housing, coming off imposing with his size and nature being one of UA's most hot-blooded students. Though despite that, he does show a more gentle side of himself having a lion's instincts to be protective of kids, often letting them play with his tail and hair. When around his significant others with the exception of Hayami, he can be gentle and protective of them. Most often shown with Mesu who he's a mix of the two with being gentle and caring with her but at the same time teasing her and pushing her buttons to get arise out of her but ultimately still protective of her FIERCELY showing his love for her.
Much like a lion, Reogun possesses keen instincts and awareness for both fighting and his surroundings. While he may not excel at school, he excels particularly at fighting being able to take in and make notes of his surroundings and use them to his advantage in combat and as well as locate and track whatever he's looking for when hunting. With that battle instinct, Reogun is very hot-blooded prefering to fight to the bitter end then runaway or accept defeat.
Though hot-blooded, Reogun is actually really free spirited loving to be out and about and enjoy the little things in life like walking in the rain or listening to thunderstorms. He does have an otaku side of himself he tries to hide with collecting funko pops and action figures in his spare time.