Weisman is a former English composition and writing teacher. He received a bachelor's degree from Stanford University and a master's from USC. Between college and graduate school, he worked on staff in the editorial department of DC Comics, while also co-writing Captain Atom with Cary Bates. When he was 22 years old, he wrote a four-issue mini-series for DC Comics starring the superheroine Black Canary; the first issue of the series was penciled, but the project was ultimately shelved due to the character being used in writer/artist Mike Grell's high-profile ' series. Elements from the ill-fated project were later used for his ' short film.
Animation
After graduate school, Weisman worked as a development executive at Disney. There, in conjunction with others, he pitched an early comedy-adventure version of the TV series Gargoyles to Disney CEO Michael Eisner. Eventually, the idea underwent a transformation from Weisman's initial conception as a largely comedic cartoon, to an episodic but sequential animated action-drama, and the series was produced for syndication. Though Gargoyles itself bears no on-air creator credit, Weisman describes himself on his website as "one of the creators" of the show. Aired as a syndicated show for 65 episodes, Gargoyles was later picked up for a further 13 episodes by ABC. Weisman was credited as a co-producer of Gargoyles from episode 6, and as a supervising producer for much of the show's second season, but he has disassociated himself from the third season. Weisman is notable for the question and answer forum he participates in with Gargoyles fans online. Weisman's other television credits include overseeing the first season of Max Steel, the second season of W.I.T.C.H., and both seasons of The Spectacular Spider-Man and four of Young Justice. Weisman has written episodes for numerous animated series, including ', ', and Kim Possible. He also voice directs and voice acts on occasion; he played the role of Donald Menken on The Spectacular Spider-Man and Lucas "Snapper" Carr on Young Justice. Weisman was also executive producer on Star Wars Rebels, alongside Dave Filoni and Simon Kinberg, but left the series after the first season. In 2016, it was reported that he would return in the upcoming revival season of Young Justice, alongside Brandon Vietti; the new season, titled Young Justice: Outsiders, began streaming on DC Universe in January of 2019.
Comic books
Weisman also continues to write for comics, including in continuity continuations of the storylines from the television series Gargoyles and Young Justice. On the latter, Weisman, along with Kevin Hopps, became full-time writers of the tie-in comic as of issue #7. Weisman also wrote a parody of Gargoyles and Captain Atom in JLA Showcase #1. During his time with the Star Wars franchise, Weisman wrote the miniseries Star Wars: Kanan for Lucasfilm and Marvel Comics. From 2015 to 2016, he wrote the superhero series Starbrand & Nightmask, which lasted six issues.
Novels
After leaving Disney in 1996, Weisman spent two years at DreamWorks, where he created and developed a new television series called Rain of the Ghosts. When the series was not picked up, Weisman bought the property back to turn it into a series of novels. His debut novel, also titled Rain of the Ghosts, was released in 2013. Its sequel, Spirits of Ash and Foam, followed in 2014. Weisman has announced that the third book will be titled Masque of Bones, and in 2015, he released a full-cast unabridged AudioPlay based on Rain of the Ghosts after successfully crowdfunding the project through Kickstarter. It was the most funded young adult project on Kickstarter. In 2016, Weisman released a children's novel in the World of Warcraft universe entitled World of Warcraft: Traveler, followed by a sequel, World of Warcraft: Traveler - The Spiral Path. Weisman's next novel is set in the universe. War of the Spark - Ravnica was released on April 23, 2019 and made the New York Times Best Sellers List. Its sequel, War of the Spark - Forsaken, was released in November of 2019.
