In the Comics Pocket collection. (Small Format)
20 issues between the 2nd quarter of 1976 and the 1st quarter of 1983. Ten collections of two issues. Two pocket-sized (13x19) and black and white series publishing DC material. The booklet bears the name of a Jack Kirby hero found in the first seven issues of the first series.
The last four issues were devoted to Conan the Barbarian.
There is a Demon (2nd series) magazine in the DC Arédit collection.