Important Things.Momotaros is an Imagin, a creature that flies to the past in order to destroy the future. Usually, when an Imagin has a contract holder, they cannot walk about freely until the contract is made. Momotaros is from post series though, where this gets resolved.
I wanted to mention a few things here...
1) Momotaros is very strong. He's got the body of a strong adult male, but even then he's got enhanced strength. As an example, Momotaros is able to rip a steel pole out of the ground with his bare hands, and even then he only needs one hand to do so. In an episode, he managed to toss a larger man 84meters.
2) Momotaros has the ability to possess people, should you want him to do so for you. When possessing a person, they gain muscular arms, red eyes, and a streak of red in their hair. His voice will also come out instead of the host's. When possessing someone, his strength becomes theirs.
3) Momotaros is deathly afraid of dogs (particularly small ones), and he also
can't swim. However, dog costumes do not frighten him, not even animal attributes. Has to be the real deal. However, if he's recently had a traumatic experience with a dog, and then sees a fake dog, he will freak. out. (Dog statues also seem to scare him.) PURE CANIDPHOBIA.
4) Lastly, (for now) Momotaros doesn't bleed blood. In the show, the sands of time are quite a prevalent theme. Time = memories, an Imagin's body is made up of people's memories... So if Momo is stabbed, sliced, harmed enough for him to bleed (it takes longer with Imagin), sand will pour from his wound. Since he's from a Kamen Rider series, most times he's struck (by claws, powerful blows, swords, etc) instead of bleeding, sparks will fly each time he's hit.
( mature-related permissions here... )6) Spices do strange things to Imagin. In canon, red peppers cause Imagin to fall asleep, while wasabi turns them into
gentlemen. There are other spicy things in the world, but we're not sure what they'd all do to Imagin. Just putting that out there!