Tsubumon

Tsubumon is a fictional character from the Digimon franchise. Tsubumon is the Baby form of Armadillomon. His name comes from the Japanese word "Tsubu," which means a grain or a drop.

Digivolution
Tsubumon's Digivolution line in Digimon Adventure 02 :''
 * Fresh (Baby I) - Tsubumon
 * In-training (Baby II) - Upamon
 * Rookie Child) - Armadillomon
 * Champion (Adult) - Ankylomon
 * Ultimate (Perfect) - N/A
 * Mega (Ultimate) - N/A

Upamon's Rookie form, Armadillomon, is able to use the Digi-Egg of Knowledge and the Digi-Egg of Reliability to Armor Digivolve. Also, Tsubumon's Champion form, Ankylomon, is able to DNA Digivolve with Angemon.

Tsubumon in Digimon Adventure 02 has no known Ultimate and Mega forms.

Tsubumon's Digivolution options in the Digimon Card Game :
 * Digivolves to: Upamon

Attacks

 * Bubble Blow (Acid Bubbles): An attack that involves firing bubbles from the mouth.

Digimon Adventure 02
Tsubumon often appeared after Shakkoumon de-digivolved. Tsubumon's first appearance was when Azulongmon ceased BlackWarGreymon's rage.

Digimon Tamers
A Tsubumon was among the shadowed Digimon that wanted Rika as their tamer.

Digimon Frontier
A Tsubumon was seen at the Village of New Beginnings run by Swanmon.

Island of Lost Digimon
A Tsubumon was seen among the Baby Level Digimon.