Slade AKA Deathstroke the Terminator is the archenemy of the Teen Titans, especially Robin, and is the main antagonist of Season 1 and Season 2; He appears as a vision in Season 3, returned as a resurrected servant of the mighty demon Trigon in Season 4. read more
"Slade is the arch-nemesis of the Teen Titans, who wants them destroyed for his own unknown reasons, and is the main antagonist in the first and second seasons; appearing only as a loyal and devoted minion of the mighty demon Trigon in the fourth season. read more
The Teen Titans. Slade has a long history as an enemy of the Teen Titans, beginning when his other son Grant received superhuman enhancements from the H.I.V.E., dubbed himself Ravager, and accepted a contract from them to kill or capture the Teen Titans. read more