His most notable DC work was as penciller, inker, colorist, and letterer[2] of the Detective Comics backup feature "Air Wave", on which he experimented, on at least one story, with using only shades of gray for color.

[1] The survey "The 20 Greatest Inkers of American Comic Books" placed Roussos at #15, saying he "was so adept with a brush in his hand that his co-workers appointed the nickname 'Inky' to him.

His style was often thick, heavy with blacks, and sported nice contrasts which complimented [sic] one of his prime collaborators in the '50s, Mort Meskin.

"[6] After a brief attempt to open an art school with colleague Mort Meskin, Roussos added comic strips to his repertoire, assisting artist Dan Barry's Flash Gordon, Charles Flanders [fr]' The Lone Ranger, Dan Heilman's Judge Parker and Sy Barry's The Phantom, and succeeding Fred Kida as artist on Judge Wright from 1947 until the strip's demise the following year.

Roussos also inked the return of Captain America in The Avengers #4 (March 1964) — the cover of which has become one of comics' most famous — as well as Kirby's Sgt.

[2] After doing some work for Warren Publishing's black-and-white horror-comics magazines in 1970 and 1971, Roussos in 1972 succeeded Marie Severin as Marvel's full-time, in-house colorist.

[9] Roussos was a Renaissance man whose myriad interests included architecture, astronomy, automobiles, gardening, natural medicine, philosophy and photography.