What is The Onyx Underkeeper worth on Roblox?
As of September 16, 2026, The Onyx Underkeeper has a Recent Average Price (RAP) of 108 Robux and the cheapest reseller listing is 95 Robux. Across the 500 owned copies, its estimated market value is 54,000 Robux.
That puts the cheapest copy 12% below RAP. RAP averages recent completed sales, so a listing under it means sellers are currently asking less than the item has been trading for.
How rare is The Onyx Underkeeper?
The Onyx Underkeeper is a UGC Limited Hat with 500 total copies. it is sold out at the original price, so copies now trade only on the resale market. it originally sold for 95 Robux.
At 108 Robux, RAP sits 1.1x the 95 Robux it first sold for.
The Onyx Underkeeper has 96 favorites on the Roblox catalog.
About The Onyx Underkeeper
Cold as the steel that covers his towers walls. He doesn't know how long he's been in the depths of his tower nor if time has passed at all. When an Underkeeper becomes restless from their oath, they tend to do an assortment of odd things. This one likes reorganizing the furniture in every room two times a day, give or take.
Where to find The Onyx Underkeeper
The Onyx Underkeeper is Roblox asset ID 16304241223. it was published by [ [One[]Pixel] ] - studios. on RBX Invest it sits in the UGC Limited Hats, Limiteds under 1,000 Copies, Cheap Limiteds under 100 R$, Limiteds under 500 R$ collections. The RAP, reseller listings, and copy counts on this page refresh from Roblox continuously, so the figures above are the state of the market at the last update rather than a fixed snapshot.