Datirimon

Datirimon is a Slime Digimon whose Japanese name is derived from the for whistling (『ぴいぴい』), whereas its English name originated from a competition run by  where the winner got the chance to name this Digimon. It is said to appear to humans who have regained once-lost wishes.

Digimon Adventure 02
Datirimon was once 's partner, but they separated because Oikawa was about to die when they first met. After is defeated,  helps the dying Oikawa to the entrance to the, where Datirimon reappears. With Datirimon's prodding, Oikawa recognizes him as his partner. Oikawa then decides to follow 's example and convert his essence into spiritual energy to prevent any evil from returning to the Digital World, though his sacrifice saddens Datirimon.

Digimon Frontier
Some Datirimon are at the Fortuneteller Village and the Autumn Leaf Fair during the 's initial visit.

Digimon Data Squad
A Datirimon is seen in a glass stasis tube in the lab where 's men were going to operate on.