|This article belongs to the Classic Timeline|
The Cassiopeian Dream Eater is an extraterrestrial organism that Albedo attempted to infect Ben with in order to get his Ultimatrix in Night of the Living Nightmare, but ended up accidentally infecting himself and becoming trapped in a nightmare.
The Dream Eater is a strange creature resembling a jellyfish. It is about the size of a human head, with several long thin blue tentacles. Its body is purple with a pink circular patch in the middle, as well as a white and two purple patches in the middle of that.
When it has ensnared a victim, the purple, white and pink patches form a skull like shape.
Powers and Abilities
The Dream Eater feeds off the chemicals produced by the brain during stress and thus, once it attaches to a host, it traps them in a nightmare to feed off these chemicals.
In order to remove it, a Galvan doctor is needed, as removing the Dream Eater by force might rip off the host's face in the process.
Although it has a strong grip, the Dream Eater can be felled if it tries to attack a Prypiatosian-B in a containment suit, as when it tried to feed off of Ben as NRG, the armor protected him for a short while until he resorted to using his radiation blasts, doing in the Dream Eater.
Cassiopea is a genus of jellyfish (which the Dream Eater resembles) and the only members of the family Cassiopeidae.
- The Cassiopeian Dream Eater is similar to the "Black Mercy" from DC Comics.