Malmarn was an alien planet that was taken over by Professor Slime.
Malmarn was a planet possibly for slime aliens, mostly because Professor Slime tried to rule it. Currently, Malmarn is now changed to the name Slimemarn.
- Captain Atomic tried to stop Professor Slime from ruling it, but failed because he got trapped between space and time until Oliver and Kaz opened a wormhole.
- It is unknown what species lives on Slimemarn