Inter-Dimensional Gunslinger

The inter-dimensional gunslinger is a marine from an alternate universe, who has gained the power of inter-dimensional travel. The inter-dimensional gunslinger appears regularly in this universe, as it is a perfect location to store loose blobulons, creatures very similar to slimes.

The inter-dimensional gunslinger also appears in this universe due to its calmness relative to other universes. Everywhere else is either a constant gunfight or the aftermath of a constant gunfight.

He hails from a group of 3 others, who have not yet found what gave him the power to traverse dimensions.