Doctor Aristotle "Tot" Rodor is a character in DC Comics

DC Comics

DC Comics, Inc. is one of the largest and most successful companies operating in the market for American comic books and related media. It is the publishing unit of DC Entertainment a company of Warner Bros. Entertainment, which itself is owned by Time Warner...

. He is a scientist and former school professor who lives in Hub City

Hub City

Hub is the capital city of the Hub Tehsil, located in the Lasbela District of the Balochistan Hub is Industrial city of Balochistan, its original name is Hub Chowki once upon a time there is an Police chowki called Nakahi in after development of Factory and many company this city change there...

. His colleague was the villain Arby Twain. He invented the pseudoderm mask and the gas for sealing it used by the various "Question" heroes: Charles Szasz and Renee Montoya

Renee Montoya

Renee Montoya is a fictional comic book character published by DC Comics. The character was initially created for Batman: The Animated Series, and was preemptively introduced into mainstream comics before the airing of her animated debut in 1992....

. He mentors both of these heroes. He also knows Richard Dragon

Richard Dragon

Richard Dragon is a fictional character created by Dennis O'Neil and Jim Berry in the novel Dragon's Fists under the pseudonym "Jim Dennis." O'Neil later adapted the character for DC Comics in the comic book Richard Dragon, Kung Fu Fighter....

.

He debued in Blue Beetle

Blue Beetle

Blue Beetle is the name of three fictional superheroes that appear in American comic books published by a variety of companies since 1939.-Publication history:...

 Volume 2 Issue #1 in 1967, and later re-introduced in February 1987 in the first issue of The Question.

His formula was stolen by John Dandy ("Yankee Doodle") and used by him.