Stoneball is the eleventh episode in the first season of Morphers. It was released exclusively on iTunes and Google Play on March 19, 2017 and later released on Adult Swim's website on May 5, 2017.
When the Christians play Stoneball, Florence decides to join the game despite her sisters complaining and is partnered with Kristian. She burns the stone, inventing the game of Morpherball. Then, the other Ingrids join in despite them complaining about it earlier. The burning stones they created with their Morphs collide, causing an atomic explosion. Meanwhile, Vincent is attempting to get a tan but is unable to, so he complains, until the Morpherballs explode, melting him into an ion pool.
- Sophia Bush as Florence
- Jana Kramer as Vanessa
- Sabrina Carpenter as Zoe
- Marty McCoy as Kristian
- Jared Padalecki as Sebastian
- Patrick Flueger as Sheldon
- Florence & Kristian Morph (Variant 1)
- Vanessa & Sebastian Morph
- Zoe & Sheldon Morph (Variant 1)
- Sports exist in Morpher Land.
- Although Florence and Kristian made a Marph in the episode Marph, they make a regular Morph in this episode.
- This is the last episode where Sebastian speaks.
- Vincent breaks the fourth wall at the end of the episode.
- This the first time the fourth wall is broken, the second being broken by Luke.
- On the website for Morphers, there are many screenshots from Stoneball used on the Christians' sections on the Explore page, but is seen with the Christians official artwork instead of the artwork seen in the show itself.
- This is the only episode to have no airings in the United States.