Monotaro is one of the mascot characters and antagonists featured in Danganronpa V3: Killing Harmony, appearing as part of a group called the Monokuma Kubs. With his siblings: Monodam, Monosuke, Monokid, and Monophanie they control the Ultimate Academy for Gifted Juveniles alongside Monokuma. Monotaro is the leader figure of the Monokubs, a group of child-like robots. As a leader, he tries to unite the group members' discordant voices into one. However, being a scatterbrain, he gets sidetracked a lot and often struggles to keep his rambunctious siblings focused on the task at hand. He is also mentioned to have a clumsy side, giving him a childlike charm and he often acts the most child-like and "pure" out of the siblings. Despite not being a very competent leader nor the smartest, his siblings consider him a reliable figure.