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River King

Medium Fey · Chaotic Neutral · CR 16

  • Fey
  • Medium
  • Tier 3
  • Neutral

River King at CR 16 is logged as a medium fey; alignment chaotic neutral. Habitat: underwater. Sourced from Tome of Beasts 1.

Stat Block

Challenge Rating
16
Type
Fey
Size
Medium
Alignment
Chaotic Neutral
Speed
30, swim 40
Habitats
Underwater
Sources
Tome of Beasts 1

Ecology

River King is a creature of the Feywild, bound to seasonal cycles, oaths, and the strange logic of fey courts. It is most often found in underwater regions. It is medium-sized, which shapes how it hunts, hides, or fights. As a legendary creature, it is rare in the world and likely the only specimen of its kind in the local region.

Behaviour

River King is governed by oaths, bargains, and a sense of beauty alien to mortals. Its Chaotic Neutral alignment shapes how it engages with the world — predictable in tendency, even when unpredictable in detail. It is intelligent enough to plan, scheme, or remember. Spellcasting expands its repertoire well beyond what its physical stat block alone suggests.

Origin

River King is introduced in Kobold Press's Tome of Beasts 1 (2016). Fey trace to the Feywild and the eternal courts of the seasons — the Seelie and Unseelie, or older powers. Within a campaign, its existence anchors a region with the kind of weight only an old, named species carries.

CR 16 monstersAll FeysUnderwater

Related Monsters

Frequently Asked Questions about River King

What is the challenge rating of River King?
Listed CR for River King: 16. Match it to a party that fits levels 11-16.
What type of creature is River King?
The bestiary type for River King is fey, medium size, chaotic neutral alignment.
Where does River King live?
The bestiary places River King in Underwater.
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Scan to open River King on your phone
QR code linking to River King — https://www.doungim.com/dnd/monsters/river-king Scannable QR code encoding the URL https://www.doungim.com/dnd/monsters/river-king. Point a phone camera at this code to open the River King page on your mobile device — useful at the table when a DM's laptop or a printed sheet is showing the page.
Scannable QR code encoding the URL https://www.doungim.com/dnd/monsters/river-king. Point a phone camera at this code to open the River King page on your mobile device — useful at the table when a DM's laptop or a printed sheet is showing the page.