The Lesser Key, the Munich Manual, Rudd, and Weyer further agree in ranking Valac as a president and attributing him with the power to locate, summon, and control serpents. The Officium Spirituum similarly attributes Doolas with the power to give the summoner command of serpents as well as "household spirits," but it ranks Coolor and Doolas as princes instead of presidents.
Valac is listed 62nd in the Lesser Key (even by Rudd) and the 50th by Weyer, with either version claiming he leads 30 legions of demons (though some manuscripts say 38). The Munich Manual describes Volach as controlling 27 legions of spirits. The Officium Spirituum (depending on the manuscript) ranks Coolor as either 22nd (with no note of how many spirits he commands) or (in the copy found in the Folger Shakespeare Library) 22nd and commanding 13 legions of spirits. All extant and complete versions of the Officium Spirituum list Doolas as 25th demon, commanding 20 legions of spirits.
Rudd's version uniquely has Valac opposed by the Shem HaMephorash angel Iahhael.
A manuscript titled Fasciculus Rerum Geomanticarum lists him as Volach.
In popular culture
Aegis Orta, valac becames the main character on the series
The 1998 film Vampires features a character named "Jan Valek" as the first vampire.
Valak appears also in the first season of Shadowhunters where it is summoned to retrieve Clary's memories back from it.
The manga series Welcome to Demon School! Iruma-kun has a main character named Clara Valac, a hyperactive demon girl who can make copies of anything she sees.
Valac (Valacor) appears in season 1 episode 2 of the 2025 TV series The Bondsman starring Kevin Bacon.