Raboy is best known for his work on "Captain Marvel, Jr" which debuted in September of 1941, written by Otto Binder and also for the classic Bulletman that thrilled huge numbers of fans in Master Comics. Raboy was a much-admired artist, but not a fast worker and he required a number of assistants to complete his assignments on time.

His comic book covers for Fawcette are some of the most sought after pieces of art by collectors.

He was known to be extremely sensitive to criticism and afer many clashes with the editors over deadlines heleft Fawcett in 1944 to join Spark Publications, where he drew the "Green Lama" until 1946. In the Spring of 1946 he signed on with King features to illustrate the "Flash Gordon" Sunday page and immediately drew the praise of fans drawing the strip until his untimely death in December of 1967.