DemiDevimon

DemiDevimon is a Rookie Level Evil Digimon who plays spiteful tricks. He resembles a bat. His English name comes from demi, meaning half, and devi, which is short for Devil. His Japanese name PicoDevimon comes from Pico, meaning small (Italian; piccolo) or billionth/trillionth (long/short scales respectively), and devi, also short for Devil. DemiDevimon is a constant liar and, with great skills in wording, he can fool almost anyone with his sweet-sounding 'Evil Whisper' lies.

Digimon Adventure: Anode/Cathode Tamer
DemiDevimon are recruitable enemies in Millenniummon's Lair. DemiDevimon is a Virus-type Sky Digimon.

Digimon Adventure 02: Tag Tamers
DemiDevimon are normal enemies in Ken's side of Machine Continent, Machine Base, and Gear Base, as well as Ryo's side of Machine Continent, Machine Base 2, and Gear Base 2.

DemiDevimon digivolves from Pagumon to Devimon with a digi-egg and Devidramon without in lines 31, 34, 59, and 67, to Devimon with and Ebidramon without in 35, to Greymon with and Devimon without in 36, and to Greymon with and Cyclomon without in 37.

Digimon Tamers: Brave Tamer
DemiDevimon are enemies in the Black Egg's and Dark Daisuke's Crevasses. A DemiDevimon accompanies Impmon when fought to save Takato Matsuki and Guilmon.

The DemiDevimon card, titled "PF Thief", is a Rank 2 card which unlocks locked chests.

Digimon Tamers: Digimon Medley
DemiDevimon are also normal enemies in the "Jigoku no Doukeshi Piemon" section of the "Ma no Yama no Shitennou Dark Masters" chapter.

Digimon Frontier
Some DemiDevimon were seen at the Fortune Teller Village and the Autumn Leaf Fair.

Digital Monster D-Project
DemiDevimon are bosses of Plains, Sanctuary, and Shrine areas, turning into Agumon, Tokomon, and Viximon respectively.

DemiDevimon is one of the Rookies of the Dimension area.

Digimon Data Squad
Three DemiDevimon appeared in the Real World working for a Vilemon and used Vilemon's plan to help a man get rich (even if it include winning a bet at a horse race). Upon discovery by Masaru Daimon and Agumon, the Three Digimon watched as Vilemon grew and fought GeoGreymon. After Vilemon was destroyed, GeoGreymon destroyed all three DemiDevimon.

Digimon Adventure V-Tamer 01
Daemon's errand boy, DemiDevimon served to report any important news to his master related to Taichi Yagami and Zeromaru.

Digimon: Digital Card Battle
He is an R level card in the game. The real DemiDevimon resides in the Steep Road battle cafe and fights in the arena. He sees Card Fusion Mutation as a real problem.

Digimon World 2
DemiDevimon is found in the Black Sword Guard Team and can get it as a partner by joining. He later appears in the wild and digivolves to IceDevimon or Devimon depending on its DP.

Digimon World 3
A random enemy in Asuka Jungle Grave. Also a black Rookie Digimon card with 3/3.

Digimon Battle Spirit
DemiDevimon appears as a field enemy in the level "Oriental Gate".

Digimon World DS
DemiDevimon can digivolve into Devimon depending on its stats. DemiDevimon can also be found in the Chrome Mine.

Digimon World Dusk/Dawn
DemiDevimon digivolves from Pagumon and digivolves to Devimon or Musyamon.

Attacks 
 * Demi Dart (Pico Dart): Throwing syringes filled with a toxin, DemiDevimon uses them to poison his targets. Though the toxin is deadly only to humans, it can make Digimon fall ill.
 * In Digimon Data Squad, the attack looked more like a small dart made of energy, rather than a syringe.
 * Bat Flutter: He uses his wings to slap his enemies.
 * Evil Whisper (悪魔のささやき): Hypnotises others into falling asleep while deceiving them with sweet-sounding lies.