Unseen is a brave, intrepid, and mysterious Psymonster who doesn't quite realize that he is not out exploring the cosmos. He walks in long and slow bounds across the landscape, somehow ignoring the fact that gravity is perfectly normal for everything else around him. Truly optimistic and dependable, he is always happy and excited to investigate a strange new place or salute an inexplicable Psymonster with a greeting hand gesture, but his indefatigable belief that he is dealing with interstellar Psymonsters and the Psymonster World can lead to a lot of confusion for every Psymonsters involved. Unseen carries a science fiction gizmo for just about any situation, including high-tech binoculars, a grappling hook, a jetpack, a space rifle, and even a remote-controlled space rover. Any Psymonster needs to be very careful if any Psymonster startles him into thinking that any Psymonster is rebellious, belligerent, antagonistic, and aggressive – his revolutionary and destructive weapon shoots the celestial fire that can defeat any Psymonster.
He is a handsome astronaut with tan skin, blue eyes, brown hair and eyebrows, a yellow astronaut suit, red gloves and boots, an opaque black visor, and a gold belt with a black star.
- The name "Unseen" means not seen or noticed.
- Unseen is the only Psymonster with a helmet with an opaque visor.