Monsters
- KolodionTroll
- Kor'Vath the Blightbringer
- Kor'Vath the Blightbringer140,000 life points
- Kor'Vath the Blightbringer170,000 life points
- Kor'Vath the Blightbringer400,000 life points
- Koschei the deathless
- Koschei the DeathlessFirst form (Dominion Tower)
- Koschei the DeathlessFirst form (The Fremennik Trials)
- Koschei the DeathlessFourth form (Dominion Tower)
- Koschei the DeathlessFourth form (The Fremennik Trials)
- Koschei the DeathlessSecond form (Dominion Tower
- Koschei the DeathlessSecond form (The Fremennik Trials)
- Koschei the DeathlessThird form (Dominion Tower)
- Koschei the DeathlessThird form (The Fremennik Trials)
- Kraka
- Krar
- Kree'arraHard mode
- Kree'arraNormal
- Kree'arraThe World Wakes
- Kree'arrangedRegular
- Kree'arranged (hydra)(hydra)
- Ksenia
- Kuradal
- KuraskVariant 1
- KuraskVariant 2
- Kurask minion
- Kurask overlord
- La'Kalor the Unbroken
- Laboratory slime
- Laboratory slimeBig (normal mode)
- Laboratory slimeBig (story mode)
- Laboratory slimeSmall (normal mode)
- Laboratory slimeSmall (story mode)
- Labrador
- Lady Deathknell
- Lady Himiko
- Lady HimikoNormal mode
- Lady HimikoStory mode
- Lady Meilyr
- Lady Trahaearn
- Lampenflora
- Lana
- Laniakea
- Lanzig
- Lara
- Large bladed muspah
- Large force muspah
- Large mosquito