| Name | Attribute | Level | Type |
|---|---|---|---|
| King of Pirates Greybeard | - | 77 | General Monster |
| King of the Dead Giant Crazy Frog | - | 21 | General Monster |
| King of the Dead Giant Crazy Frog | - | 41 | General Monster |
| King of the Dead Giant Crazy Frog | - | 21 | General Monster |
| King of the Dead Giant Crazy Frog | - | 41 | General Monster |
| King's Glory | - | 1 | General |
| King's Victory | - | 1 | General |
| Kingdom Soldier | - | 1 | General |
| Kingdom Soldier | - | 1 | General |
| Kingdom Soldier | - | 1 | General |
| Kisaragi | - | 1 | General |
| Kitchen | - | 1 | General |
| Kitsu Saga Envoy Huji | - | 5 | General |
| Kitsu Saga Envoy Huji | - | 1 | General |
| Kitsu Saga Envoy Huji | - | 1 | General |
| Kitsu Saga Envoy Huji | - | 1 | General |
| Kittana | - | 1 | General |
| Klim | - | 1 | General |
| Knight | - | 1 | General |
| Knight of Alfheim Lestat | - | 1 | General |
| Knocked-Out Cherry | - | 1 | General |
| Know It All Prophet Pigglesworth | - | 1 | General |
| Know It All Prophet Pigglesworth | - | 99 | Elite Monster |
| Know It All Prophet Pigglesworth | - | 1 | General |
| Koharu Flower | - | 1 | Interactive |
| Koichi | - | 1 | General |
| Koolflap | 14 | General Monster | |
| Korsiko | - | 1 | General |
| Kraft | - | 1 | General |
| Krai | - | 1 | General |
| Krangutan | 55 | General | |
| Krangutan | 55 | General Monster | |
| Krangutan | 53 | General Monster | |
| Krantz 1 Guard | - | 1 | General |
| Krantz 2 Guard | - | 1 | General |
| Krantz 4 Guard | - | 1 | General |
| Krantz 5 Guard | - | 1 | General |
| Kronkite's Pool | - | 58 | General Monster |
| Kronkite's Pool | - | 58 | General Monster |
| Kronkite's Pool | - | 61 | General Monster |
| Kronkite's Pool | - | 58 | General Monster |
| Kronkite's Pool | - | 38 | General Monster |
| Kronkite's Pool | - | 58 | General Monster |
| Kronkite's Pool | - | 38 | General Monster |
| Kunoad | - | 1 | General |
| Kunoad | - | 1 | General |
| Kurti | - | 1 | General |
| Kyneberry Sapling | - | 45 | General |
| Lachlan | - | 1 | General |
| Lakeship shadow | - | 1 | General |