The demilich first appeared in first edition Advanced Dungeons & Dragons in the adventure Tomb of Horrors (1978),[REF] and later appeared in the adventure The Lost Caverns of Tsojcanth (1982),[REF] and was reprinted in the first edition Monster Manual II (1983) [REF].
The demilich appeared in second edition under the "lich" heading in Monstrous Compendium Volume One (1989),[REF] and in the Monstrous Manual (1993) [REF].