Frederick is a recurring character in Wander Over Yonder.
Frederick is a gigantic space worm who serves as voice of reason and bond protector for neighbor.
Ryder and Sylvia were partners before this met Wander. When they meet again, they fought for a brief moment but for fun, and were mostly friendly with each other.
Unfortunatelly for Wander, Ryder swhos slight animosity and disbelief that Sylvia had him as a partner.
Ryder seems to plan find Lord Hater's Hidden Galactic storage station to return all the stolen treasures for him but his real goal is to keep it to himself. In fact, he betrayed his old gang; the Scuzzbuckets and stole them the key that opens the Hater's ship doors.
Wander, Sylvia and Ryder steal a ship in order to arrive until Hater's station but they are persecuted by the Scuzzbuckets. However, thanks to Sylvia and Ryder's shunting, their enemies are defeated
Wander, Sylvia and Ryder come to Hater's station. Wander gets out because thinks Sylvia would be happy with Ryder and finds Frederick, a gigantic space worm whose cousin had been helped by him and Sylvia.
Once Ryder's true intentions is revelated, he betrays Sylvia in order only she were captured by Watchdogs but he is captured too. However, Wander joins in scene riding Frederick, saving the duo and destroying Hater's station.
Wander, Sylvia and Ryder flees into orbble juice, but Sylvia, knowing how Ryder was, throws him out orbble and falls until Frederick's planet, who talks with him about his honesty issues.