Pumpkinmon

Pumpkinmon is an Ultimate Level Puppet Digimon with a pumpkin head. He is known as Pumpmon in Japan. He can throw his axe at his enemy.

Digimon Adventure
The first Pumpkinmon the DigiDestined encountered was supposedly minions of Myotismon, along with a Gotsumon, although they would rather have had it be otherwise. Dispatched to search for the Eighth Child, Gotsumon and Pumpkinmon ended up in Shibuya, where they became enthralled by the culture and populace of Earth and immediately set about exploring, having fun and generally causing trouble. It was only when they pulled a teenage girl's nose ring that they encountered Matt, T.K. and Gabumon as they were searching for Patamon (due to an argument he and T.K. had earlier). After explaining that they just wanted to have fun, the two carried on their mischief, with Matt and T.K. trying in vain to get them out of trouble. But after the two stole some ice cream, Myotismon appeared and was angered to find the two slacking off. He ordered them to attack the brothers and Gabumon, and they had no choice but to comply. As soon as they got far enough away from Myotismon, however, they simply quit as they did not want to hurt the DigiDestined. Enraged, Myotismon attacked them. They tried to fight back but they were no match for his power. His Grisly Wing attack killed them (in the English dub, they were condemned to his dungeon in the Digital World).

Digimon Adventure 02
Though the same Pumpkinmon does not show up in Adventure 02 they are remembered by T.K. and Matt. Matt comments "I really miss those guys."

Digimon Tamers
A Pumpkinmon was among the frozen Digimon in IceDevimon's collection.

Digimon Frontier
Some Pumpkinmon were seen at the Fortune Teller Village and the Autumn Leaf Fair during both visits. Some were accompanying some Gotsumon, possibly a tribute to the ones from the first season.

Digimon Data Squad
Some Pumpkinmon reside in the Holy Capital. They bounded Marcus Damon, Agumon, Thomas H. Norstein, Gaomon, Yoshino "Yoshi" Fujieda, and Lalamon. One Pumpkinmon serves as Baronmon's right hand Digimon. When it came to Akihiro Kurata's next attack, some Pumpkinmon were seen at Baromon's assembly. When ElDoradimon was brought to the Digital World, two Pumpkinmon used their attacks on the Gizumon-XT causing them to destroy each other. What happened to the Pumpkinmon after the Holy Capital was destroyed remains a mystery. One was also seen in a stasis tube when Kurata was going to operate on Relena Norstein.

Digimon Adventure: Anode/Cathode Tamer
Pumpkinmon is a Variable which deals damage to one enemy.

Digimon Adventure 02: Tag Tamers
Pumpkinmon are normal enemies in Ken's side of Darkness Server.

Pumpkinmon digivolves from Vilemon in line 48.

Digimon Tamers: Brave Tamer
Pumpkinmon are enemies in the Trap Crevasse.

The Pumpkinmon card, titled "Guard Chip", restores one ally's SC and PC.

Digimon World 2
Pumpkinmon digivolves from Togemon and Yanmamon, and can digivolve further to Rosemon.

Digimon World Data Squad
http://digimon.wikia.com/wiki/User:Maitkarro/DW_Data_Squad#Pumpmon

Attacks
 * Pumpkinmon Power(Pumpkin Squash): Causes a big pumpkin to appear over the enemy and crush it.
 * Trick or Treat: Throws pumpkins at his enemy.
 * Jack O'Lantern