Electric Ray debuted in AMAZING MAN COMICS #26 (Jan 1942), which also happened to be the final issue of the series. It was also pretty close to one of the last comics that Centaur Publications published at all. Poor guy never even got to get into tights. :-(
from
AMAZING MAN COMICS #26 (January 1942)
story and art by Martin Filchock
from Golden Age Comics Downloads
AMAZING MAN COMICS #26 (January 1942)
story and art by Martin Filchock
from Golden Age Comics Downloads