| nom | niveau | type | groupe |
| Kabukimon | Armor / Cuirassé | Antivirus | Mutant |
| Kabuterimon | Adult / Champion | Antivirus | Insecte |
| Kaisergreymon | Hybride | Variable | Dragon Guerrier |
| Kaiserleomon | Hybride | Variable | Guerrier |
| Kamemon | Child / Disciple | Donnée | Cyborg |
| Kangaroomon | Armor / Cuirassé | Antivirus | Mammifère |
| Kapurimon | Baby II / Entrainement | Donnée | Micro |
| Karatenmon | Perfect / Ultime | Virus | Magicien |
| Karatsukinumemon | Adult / Champion | Virus | Crustacé |
| Kenkimon | Adult / Champion | Donnée | Machine |
| Keramon | Child / Disciple | Virus | Non Identifié |
| Ketomon | Baby I / Bébé | Donnée | Micro |
| Kiimon | Baby I / Bébé | Donnée | Micro |
| Kimeramon | Perfect / Ultime | Virus | Composition |
| Kingchessmon | Ultime / Mega | / | / |
| Kingetemon | Ulltime / Mega | Virus | Jouet |
| Kingsukamon | Perfect / Ultime | Virus | Mutant |
| Kiwimon | Adult / Champion | Donnée | Oiseau |
| Knightchessmon (Blanc) | Adult / Champion | / | / |
| Knightchessmon (Noir) | Adult / Champion | / | / |
| Knightmon | Perfect / Ultime | Donnée | Guerrier |
| Koemon | Child / Disciple | Virus | Animal |
| Kobatuterimon | Child / Disciple | Virus | Insecte |
| Kokatorimon | Adult / Champion | Donnée | Oiseau |
| Kokuwamon | Child / Disciple | Donnée | Machine |
| Kokuwamon X | Child / Disciple | Donnée | Machine |
| Kongoumon | Armor / Cuirassé | Donnée | Armor |
| Koromon | Baby II / Entrainement | Donnée | Micro |
| Kotemon | Child /Disciple | Donnée | Reptile |
| Kougamon | Adult / Champion | Donnée | Mutant |
| Kudamon | Child / Disciple | Antivirus | Créature Enchanteresse |
| Kudamon (Savers) | Child / Disciple | Antivirus | Créature Enchanteresse |
| Kumbhiramon | Perfect / Ultime | Antivirus | Créature Exaltée |
| Kunemon | Child / Disciple | Virus | Larve |
| Kuramon | Baby I / Bébé | Virus | Micro |
| Kuwagamon | Adult / Champion | Virus | Insecte |
| Kuwagamon X | Adult / Champion | Virus | Insecte |
| Kuzuhamon | Ultime / Mega | Donnée | Magicien |
| Kyaromon | Baby II / Entrainement | Donnée | Micro |
| Kyokyomon | Baby II / Entrainement | Donnée | Micro |
| Kuykimon | Perfect / Ultime | Antivirus | Animal Mythique |
| Kyubimon | Adult / Champion | Antivirus | Animal Mythique |