1) Doer 2) Madman 1) Science fiction fanzine 
[magazine] Energumen was an influential science fiction fanzine edited by Mike Glicksohn and Susan Wood Glicksohn from 1970-1973 (fifteen issues), with a special final `11th Anniversary Issue!!` [sic] in 1981 after Susan`s death. It won the Hugo Award for Best Fanzine in 1973, after having been a nominee for the Hugo Award for both the prio...
individual inhabited by an evil spirit
• (n.) One possessed by an evil spirit; a demoniac.
En`er·gu'men noun [ Latin energumenos , from Greek ... possessed by an evil spirit, from ...: confer French énergumène . See Energetic .] (Eccl. Antiq.) One possessed by an evil spirit; a demoniac.