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The Spaceman Spiff Universe is the conjectural name of the universe that features Spaceman Spiff. It probably takes place in a universe similar to ours, as Spaceman Spiff is often mentioned to be an earthling. There are many aliens in Spaceman Spiff, with 21 confirmed species and many more whose species is not known. Space travel is possible in this universe, as evidenced by Spaceman Spiff's spaceship and the Zok Death Sloop.

There is a 5th Dimension in this universe. The only thing we know about it is that, in this dimension, "Time has no meaning". The only known way to get to this dimension is by the use of Hyper-jets, which one model is equipped on Spiffs Spaceship.

The main unit of measurement appears to be the Zork. An unknown amount of Zorks equals a Megazork. An unknown amount of Mips equals a Zork. An unknown amount of Micromips equals a Mip.

In Real Life[]

The Spaceman Spiff universe is very analogous to events in Calvin's life. Common antagonists include Calvin's teacher, Miss Wormwood, Calvin's Mother, Calvin's Father, and Susie Derkins. There are only two known instances where anybody other than Spiff is a protagonist. These incidents include the Motherly alien, and the Other motherly alien. Calvin appears to use Spaceman Spiff as a way to cope with his events, which are usually unfavorable.


Alien Species[]

This list only includes aliens whose species name is known.

Specific Aliens[]


Named Planets[]

This only includes planets whose names are known.

Unnamed Planets[]

This includes planets whose names are not known.

  • Mysterious Planet
  • Mysterious World
  • New Planet
  • Other Uncharted Planet

Known Ships[]