The kid uses some sort of magical language to call Azoth out of the TV version of the comic book universe, but there was no way he could stay long. According to the Great and Magnificent (aka the Great and Powerful), comic book characters are not allowed to cross the Forbidden Zone into Toobworld.
That's what happened when Captain Justice escaped his hometown of Pleasantville in the comic book universe so that he could inspire his creator, Abner Bevis, into pouring his full talents into the comic book once again.
The Great and Powerful sent a private eye character from another comic book across the Forbidden Zone in order to bring Captain Justice back. And so began the short happy life of 'Once A Hero' back in 1987.
No matter how they crossed over from fictional comic books to the TV Universe, I think Azoth, Captain Justice, and Gumshoe all share the same alternate world. (Although Azoth may have lived in an earlier time period. Nevertheless, I'm making the claim that the TV series 'Once A Hero' and the 'Twilight Zone' episode "Azoth The Avenger Is A Friend Of Mine" belong in the same dimension and are theoretically linked.
*Pizzazz was the name of the comic book company that published 'Captain Justice'. And they may have been responsible for the 'Azoth The Avenger' line as well.