Professor Rhukk was a Martian archaeologist. His first brother Savaar commanded the warship Bruk.
Rhukk knew Irving Braxiatel and did work for the Braxiatel Collection. He was also friends with Bernice Summerfield and attended her wedding in Cheldon Bonniface on 24 April 2010. (PROSE: Happy Endings)
High Lord Rhukk's An Even Briefer History of Time briefly discussed the mystery of the Euterpians. Bowketts Universal Publications published it in 3974. (PROSE: Invasion of the Cat-People)