On September 21, 2020, as part of his podcast BumbleKast, writer Ian Flynn expressed interest in adapting Cosmo and the Metarex from the animated series "Sonic X" into IDW's Sonic the Hedgehog comics, which would effectively incorporate them into the mainline Sonic canon. A year later, he would reveal that said arc would not happen anytime soon, as fellow writer Evan Stanley had more stories that needed to be finished. In January 2024, however, Flynn revealed that most content that comes from the show is off the table, including characters such as Cosmo, the Metarex, Topaz, Mr. Tanaka, and Ella.

However, there may be an exception to this in the form of the "Next Show", a fictional children's show featuring a purple mascot character named Next that Cream and Cheese are shown to be fans of during Sonic X. The show was first referenced in Cream's Sonic Channel profile, where it was listed as one of her likes. Later, 2023 would feature two seperate instances of the show being referenced: first during the "Otherworld Comedy" series of wallpapers posted on Sonic Channel, where it was mentioned in the story for the May 2023 wallpaper ("Story Act 5: My Vector Man"), then later as part of the official Christmas 2023 picture, where a toy based on Next appears amongst the pile of gifts.