Upamon is an Amphibian Digimon whose name and design are derived from the axolotl (ウーパールーパーŪpā Rūpā?, Wooper Looper). It has ear-like branchia growing from both sides of its head. Although it is able to live whether on land or under water, it appears that it is rather suited for life on land. Because of its carefree personality, it is easily and frequently bullied by other Digimon. However, because of its personality, there are occasions when it mistakes it as being played with, rather than it being bullied.
- Main article: Upamon (Adventure)
Merukimon tells of some Upamon who flee from Kurata's group 10 years ago.
Upamon can be found and captured in Park Town, where it is a level 8 enemy. Upamon's unique drop is Upamon's Wing. It has a stat build of 2-2-3-1 as a captured Digimon and a stat build of 3-2-3-1 as an enemy Digimon. Upamon's Skill 1 is Shock Shout, which is a distant single target skill. Upamon digivolves to Armadillomon at level 11.
- Shock Shout: Releases an ultrasonic shout to make the opponent flinch.