Hollow One

"Hollow Ones wish their unlife upon all others, and thus seek to empty the organs out of living creatures they encounter."

- Monster summary

Hollow Ones are a type of undead monster encountered in Diablo II and Diablo Immortal.

Diablo II
In Diablo II, Hollow Ones the most basic form of the Greater Mummy monster. They spawn in the Halls of the Dead 1-2 in, and possess Lightning immunity in Hell difficulty. They are usually found with several Returned minions. They are able to resurrect any low undead, similar to a Fallen Shaman. They are the only Greater Mummy type not immune to Magic, as they are hollow.

Diablo Immortal
Hollow Ones are encountered in the Shassar Sea zone in Diablo Immortal, as well as the Tomb of Fahir. In the case of the latter, flaming Hollow One variants are encountered, where just touching them causes the player damage.