O'Shea Jackson Sr. (better known as Ice Cube) is a rapper who appeared in the post-credits scene of "Rise of the Numbericons: The Movie".
Appearance[]
As a human, he pretty much appears as an animated version of his real-life self. As a geomitron, he is a literal ice cube with his human face on it.
Role in episode[]
In the post-credits scene, Ice Cube arrives at Magma-T's palace to warn him about his planet's invasion by the formivores, which Magma-T decides to help him with.