Incredibly charismatic and generous he is also nice and kind he knows, Mitsuri the love hashira, Obani the serpent hashira, Uzui his best friend the sound hashira, shinobu the insect hashira, giyuu the water hashira, sanemi the wind hashira, gyomei the stone hashira, muichiro the mist hashira. Rengoku also has a little brother who is senjuro and rengoku is the flame hashira he also has abs.