Angar first appeared in Daredevil v1, #100 (June 1973), and was created by Steve Gerber, Gene Colan, and John Tartaglione.
The character subsequently appeared in Marvel Premiere #25 (October 1975), Iron Fist v1, #1-2 (February-March 1976), 5-7 (June-September 1976), Spider-Woman v1, #34-35 (January-February 1981), 50 (June 1983), Avengers Spotlight #26 (December 1989), 28-29 (January-February 1990), Marvel Comics Presents #97 (1992), Nick Fury: Agent of SHIELD v2, #33-35 (March-May 1992), Captain America v1, #411-414 (January-April 1993), and Avengers Unplugged #4 (April 1996).
Moondragon provided a crooked lawyer named Kerwin J. Broderick with a machine built on Titan.
[7] She was then found by Baron Helmut Zemo, who had Fixer rebuild her voicebox and give her new powers, after which she joined the Thunderbolts as Songbird.
[11] As part of the All-New, All-Different Marvel event, an Angar the Screamer from an as-yet-unidentified reality appears as a member of Maker's New Revengers.
[12] Angar can emit an extremely powerful scream of high amplitude, thus deafening or even causing permanent hearing damage to those around him.
[15] Angar is a being made out of "solid sound" that allows him to exist without food or sleep, except for air he needs as a transmission medium.