Момотарос

Momotaros (モモタロス) is the first Imagin that gives Ryotaro his power, which allows for the Sword Form transformation. He can also sense when an Imagin is rampaging in the city, subsequently alerting Ryotaro immediately. His natural weapon as an Imagin is a sword named the Momotarosword (モモタロスォード).

Momotaros blames Ryotaro for his Oni-like form, though it matches his personality, best described as hot blooded, arrogant, and comedic, serving as a foil to Ryotaro's own shy and cowardly personality. In fact, Momotaros is more interested in fighting than carrying out the Imagin's goal. Unfortunately, he is constantly beaten by Hana when he gets Ryotaro into trouble. When he possesses Ryotaro, declaring the words "Here I come!" (俺、参上！, Ore, sanjou!), Momotaros's own personality takes over, giving Ryotaro power, confidence, and a bit of his eagerness for a good fight.

His eagerness is shown in battle, where he always declares the words, "I am, from start (to finish), at the climax!" (俺は最初から（最後まで）クライマックスだぜ！, Ore wa saisho kara (saigo made) kuraimakkusu da ze!?).

Momotaros is also somewhat selfish, initially fighting alongside Ryotaro in order to ensure his own survival. Though he unknowingly places Ryotaro in unneeded danger to suit his fancy, Momotaros eventually learns to respect him and his desire to protect others. Though he demands respect, Momotaros is usually put in his place by Hana and her powerful punches. He also does not know how to swim, has a narcotic reaction to red peppers, and seems to be afraid of dogs. While he acts hostile and demeaning to the other Tarous, he does care about them, proven by hiding his anguish while they are slowly disappearing due to the events of the Climax Scene.