Cinderblock first appeared in the first episode, "Divide And Conquer", where he was going to the prison cell to free the criminals. Even the guards couldn't stop Cinderblock, but the Teen Titans arrived to prevent him from freeing the criminals. But when Robin and Cyborg tried to combine their attacks, their foot got in the way, allowing Cinderblock to escape and complete his goal. Cinderblock then freed Plasmus from prison and brought him to Slade's headquarters. Later, when the Teen Titans were reunited with Cyborg, he showed Robin and the others that he defeated Cinderblock.