Pipismon

Pipismon is the Armor Digivolved form of Patamon through the Digi-Egg of Love. His name comes from pipistrellus abramus, the Japanese house bat. They are known to mimic someone's speech and their powers are greatest in the dark.

Digimon Tamers: Battle of Adventurers
Pipismon was one of the Digimon who invaded the island base of VP Labs and held company president Ryuuji Tamashiro and programmer Takehito Uehara captive, threatening Uehara’s daughter, Minami, to make him reveal the location of the V-Pet vaccine program. When Seasarmon and Growlmon burst into the complex to free Minami, Pipismon was destroyed with one Pyro Blaster shot by Growlmon, along with Ponchomon and Sepikmon.

Digimon Frontier
A bunch of Pipismon were seen in the Dark Continent and mimicked the speech of the Legendary Warriors, who had to use glowing moss to reveal them. Some were destroyed and had their Fractal Codes absorbed by Arbormon.

Digimon Savers
A Pipismon was seen in a stasis glass tube in the room where Thomas' sister was in.

Digimon Savers: Ultimate Power! Active Burst Mode
A group of Pipismon sent by Argomon to attack Lalamon, but she easily defeated them.

Digimon World Dawn/Dusk
Pipismon can be obtained by digivolving a Patamon with the Digi-Egg of Love when he is at Lv21+ with 100 or more Speed Stat

 Attacks
 * Crazy Sonic Blaster (Crazy Sonic): A sound wave attack that destroys the senses.
 * Sky Jacker

Notes and References
TRIVIA

Pipis is an Indonesian word for "pee"