Hama began working in comics in the mid 1970s at DC Comics, but would soon work for Marvel Comics on the title John Carter, Warlord of Mars. He would gain fame in the early 1980s writing the licensed series based on the G.I. Joe Hasbro toys and he was also credited with the character development for the cartoon series of the same name. Later he would write the hard-hitting war series called The 'Nam as well as the Wolverine comic series starring the popular Marvel character.
Hama has also appeared in an episode of the television series MASH and the sketch comedy show Saturday Night Live.
- Star Wars (1977) 48
- Star Wars: A Long Time Ago... Volume 3: Resurrection of Evil