Other works
In 2015, Hartman launched a "kid-safe [online] network of live shows and cartoons" called The Noog Network. The Noog Network, as well as the original YouTube channel of the same name, are both currently abandoned with no further information on if they will be re-instated.
In October 2017, Hartman launched the podcast Speech Bubble, on which he talks about pop culture. Several voice actors have appeared on the podcast, including Rob Paulsen, Tara Strong, Jerry Trainor, Grey Griffin, and Vic Mignogna. After initially posting excerpts on his primary YouTube channel, the podcast videos were later moved to their dedicated YouTube channel, now including full episodes.
In June 2018, Hartman started a Kickstarter campaign for OAXIS Entertainment, a "family-friendly" streaming service. A number of online personalities since alleged that OAXIS was planned to be a Christian-themed network. Hartman, however, asserted that, while faith would continue to be a part of his personal life, "OAXIS Entertainment is not faith-based". As of 2026, Hartman has yet to give any updates on OAXIS.
On June 22, 2019, Hartman released the animated web series HobbyKids Adventures. This series, produced by PocketWatch Inc., was created for the YouTube channel HobbyKidsTV. On 13 July, Hartman released a book, Mad Hustle, which details the ins and outs of pitching and selling a show in Hollywood.
In 2019, Hartman created the Christian animated web series The Garden, which he co-produced with his wife Julieann. Hartman planned at least two seasons of the series and to launch a subscription-based app for The Garden in late 2022. Hartman's further plans for the property include creating a VBS curriculum for churches and illustrating a children's Bible published by Thomas Nelson, titled The Garden Children's Bible, which stars the characters from The Garden and was scheduled to release in 2023. The series premiered on Pure Flix on January 1, 2023.
In February 2021, Hartman was accused of plagiarism when he published his commissioned artwork of Attack on Titan character Mikasa Ackerman, in which similarities were noted to a 2018 artwork of a Japanese artist.
Hartman was credited as an executive producer on The Fairly OddParents revival series The Fairly OddParents: Fairly Odder and The Fairly OddParents: A New Wish.
