Petermon

A Digimon which has the appearance of a boy that dances freely in the sky. It tempts young and childish Digimon that refuse to evolve with, "Let's make a country just for children," calling them to the children's world of "Never-Ever Land" that it built. It's said to have a naive and innocent personality, but thanks to its purity there a brutality lurks within. In particular, although it calls it a "Pretend Punishment", it mercilessly beats Digimon who break their promises. With Petermon's first-class handling of its sword, it delicately manipulates the knife on its hip to punish the opponent.

(Source: Wikimon)