Nakadai, Mori and Sumida

, and  are the three Saint Ishiyama Academy students who threw weights on and severely injured Takeshi Shiroyama after he sent Yuka Hanazawa and Ryōko Asuka away from them when they attempted to flirt with the girls. It is unknown which of the three carry either of their names.

The student who threw the first dumbbell at Shiroyama, whose personal name also includes, appears in the manga only.