Jericho — [s2e8]

: Although the Titans eventually grow to care for Jericho, the secret of their original intent causes a rift. When Jericho learns the truth, he is hurt but still attempts to reconcile with his father.

: This event is the "root cause" of the original Titans' breakup. The team blames Dick for using a kid to get revenge, leading to their permanent fallout. [S2E8] Jericho

: Following the murder of Garth (Aqualad), Dick Grayson and the Titans befriend Jericho Wilson, the mute son of Slade Wilson (Deathstroke), to use him as a way to get to his father. : Although the Titans eventually grow to care