Disambiguation: The Ray / Neon
First published in: 1940
Happy Terrill (The Ray) first appeared in Smash Comics (Quality Comics, 1939 series) #14 (September 1940).
The Ray first appeared in a DC comic in a reprint in Superman (DC, 1939 series) #252 (June 1972), then appeared in a new story in Justice League of America (DC, 1960 series) #107 (September-October 1973).
Happy Terrill became Neon in Uncle Sam and the Freedom Fighters (DC, 2007 series) #6 (April 2008).
Happy's real name was given as "Lanfor Terril" on a wanted poster in Freedom Fighters (DC, 1976 series) #3 (July-August 1976), and as "Langford Terrill" in the Ray story in Cancelled Comic Cavalcade (DC, 1978 series) #1 (Summer 1978).
Link: https://en.wikipedia.org/wiki/Ray_(DC_Comics)#Langford_%22Happy%22_Terrill Link: https://en.wikipedia.org/wiki/Neon_the_Unknown#The_new_Neon