アニメ第106話で初登場。骸骨っぽいポン骨にとりつかれると途端に何をやっても失敗ばかりするようになる。電化製品も予想もしない時にいきなり壊れてしまうことを引き起こす妖怪だそうです。
図案はこちら
Ponkotsu is a member of the Tough Clan and first appears in Episode 106 of the anime. Anyone possessed by this yokai suddenly fails at everything they try to do. Electronics and appliances break down whenever this yokai is around. The name is a play on [ぽんこつ] ‘ponkotsu‘ which means ‘a piece of junk’ and [骨] ‘kotsu‘ which means ‘bone.’
何をやっても失敗ばかりさせる ポン骨 妖怪ウォッチ3アイロンビーズの図案