Yumoto Hakone Battle Lover Scarlet First person: I (energetic, casual) His family runs the Kurotama Bathhouse, and he loves cute things. He's constantly cuddling Wombat. A cheerful, adorable boy. Completely innocent and full of energy. 1st Year

Atsushi Kinugawa Battle Lover Epinard First person: I (polite, soft) Serious and wears glasses. Often seen with Yufuin. Rather quiet. He calls Yufuin, who has the opposite personality, "En-chan." They are close friends. 3rd Year

Io Naruko Battle Lover Sulfur First person: I (polite, soft) Loves money. Tends to prioritize money over everything else. He calls Zao "Ryu." 2nd Year

Ryu Zao Battle Lover Vesta First person: I (rough, casual) Narcissistic and a ladies' man. However, he rarely has luck with the girls he actually likes. His smartphone is constantly buzzing with date invites from girls... He calls Naruko "Io." 2nd Year

En Yufuin Battle Lover Cerulean First person: I (rough, casual) Goes at his own pace. Lazy and hates effort. Always lounging around. He calls Kinugawa, who has the opposite personality, "Atsushi." They are close friends. 3rd Year

An alien in the form of a wombat who gave the Defense Club members their transformation powers. He came to protect the Earth. Always speaks in polite language. First person: I (formal)