| NAME | LEVEL | TYPE | GROUP |
| Kabukimon | Armour | Mutant | |
| Kabuterimon | Champion | Vaccine | Insectoid |
| Kangaroomon | Armour | ||
| Kaprimon | In-training | None | |
| Karatenmon | |||
| Keramon | Rookie | Unidentified | Unidentified |
| Kerpymon | Mega | Vaccine/Virus | Angel |
| Kimeramon | Ultimate | Data | Composition |
| KingEtemon | Mega | Virus | Puppet |
| Kiwimon | Champion | Data | Ancient Bird |
| Knightmon | Ultimate | Data | Warrior |
| Kokatorimon | Champion | Data | Bird |
| Kokomon | In-training | None | Micro |
| Kokuwamon | Rookie | Data | Machine |
| Kongoumon | Armour | Data | Insect |
| Koromon | In-training | None | Micro |
| Kunemon | Rookie | Virus | Larva |
| Kuramon | Fresh | None | Micro |
| Kurisarimon | Champion | Unidentified | Unidentified |
| Kuwagamon | Champion | Virus | Insectoid |
| Kyuubimon | Champion |