Real Name: Unknown
First Appearance: Sure-Fire Comics # 1 (June 1940)
Publisher: Ace Comics
As the introduction states in their first appearance in Sure-Fire Comics #1, Marvo the Magician and his monkey Tito were "two of the world's most unique characters." Marvo and Tito traveled the country solving crimes.
While it appeared that Marvo had magical abilities, they may have been more illusion than real magic.
Marvo was featured in Sure-Fire Comics #1-3 and then, when Sure-Fire changed its name to Lightning Comics, appeared there in issues #4-13.