The Don't Call Me Princess Marathon was a marathon special 10-hour UltraToons Network marathon that aired on June 30 and July 1, 2018 from 10:00am to 8:00pm. This marathon mainly featured episodes of The Amazing World of Gumball, Teen Titans Go!, a 2016 revival of The Powerpuff Girls, Adventure Time and Steven Universe, focusing toughness female characters (such as Raven from Teen Titans Go!, Buttercup from The Powerpuff Girls, Nicole Watterson from The Amazing World of Gumball). This marathon based on some European countries of Cartoon Network special on same name, but unlike CN counterparts, this marathon also aired "Modern-Classic" shows such as The Life and Times of Juniper Lee, Hi Hi Puffy AmiYumi and Atomic Betty, and non-CN shows such as Kim Possible, Wander Over Yonder, My Life as a Teenage Robot, T.U.F.F. Puppy and Phineas and Ferb.
- All the "Now/Then" bumpers from during previous program New Looney Tunes (June 30)/The Fairly OddParents (July 1) at 9:30am until handover to next program ToonHeads/Gravity Falls at 8:00pm are featured by the voices of Raven, Buttercup, Sylvia, Garnet, Isabella Garcia-Shapiro, Starfire, Amethyst, Blossom, Yumi Yoshimura, Connie Maheswaran, Kitty Katswell, Marceline Abadeer, Bubbles and Pearl, as well as many voice actresses from featured shows.