Forrest J Ackerman (1916-2008) was a pioneer in the early development of science fiction fandom. Among his credentials:
- Literary agent whose clientele included Ray Bradbury and Isaac Asimov, among others.
- Author of several science fiction short stories and an anthology editor.
- Wrote the origin story of comic book character Vampirella.
- Editor of Famous Monsters of Filmland magazine, as well as a contributor to several other fandom publications.
- Attended the 1939 World Science Fiction Convention wearing what is widely considered the first instance of cosplay.
- Maintained a large collection of science fiction, fantasy, and horror memorabilia in a museum called the Ackermansion, later moved to the Son of Ackermansion.
- An actor in several science fiction films, primarily bit parts.
- Future War (Experiment #1004) - as park victim
- The Time Travelers (Experiment #1103) - as square-frame technician