|Nuclear Fusion Device|
|Type||Nuclear Fusion weapon|
|First Appearance||Hot Stretch|
In Hot Stretch, Ester brought this to Seebik for her race. This was used to power a heater so that it could make the environment of Earth more suitable for the Kraaho as Kraaho require a high temperature to live. However upon the use of this device, the surface above Undertown began to suffer environmental catastrophes thereby leading to Ben and Rook with the help of Ester to stop it.
Ben 10: Omniverse
- Hot Stretch (first appearance)
- According to Rook, these devices are very dangerous.