Minor characters in Teen Titans Season 6-12.
Jor-El - The biological grandfather of Superboy through Superman. Before Krypton exploded, Jor-El helped stop Zod's attempted take over of Krypton and helped free Argos. He was also present when Zod was imprisoned in the Phantom Zone.
Snapper Car - Snapper Car reported Jax-Ur and Mala's return in Edge City.
Trigon - Raven's defeated and banished father. His effect on his daughter's life is still shown when Raven's exposed to the Daughter of Scarecrow's fear gas, and her fear illusion is Trigon tormenting her and claiming he'll rule over her for all eternity. This apparition of Trigon is destroyed once Raven realizes that she's simply in an illusion and calls out that she's not afraid of him and frees herself from it.
Dr. Light - When Dr. Light was running from the Titans, Superboy caught him, and Dr. Light taunted that if Superboy brought him in, he'd hurt his mother, and this caused him to be slammed into a wall repeatedly until he was restrained by Raven. Following that, he thanked Raven and said he was ready to go to jail now.