Robin (DC Animated Universe)

Timothy Drake was the second Robin. His father Shifty Steven Drake was often a thug for Two-Face. Shifty Drake went missing (and was later revealed to have been killed in Metropolis) and the runaway Tim met Batman. After finding out Batman's secret identity, Tim stole the Robin costume to get revenge on Two-Face.

He went on many adventures with Batman. One night, Robin thought that he was saving an innocent woman from evil thugs, but it was just a trap set by the Joker and the woman was Harley Quinn in disguise, who then knocked out Tim. The Joker then tortured him for days at the old abandoned Arkham Asylum. He learned what Batman's secret identity was from him and then he "made" him into a "son" - Joker Junior. Then Joker tried to use him to kill Batman, but Tim turned and killed Joker instead with Joker's BANG! flag gun. Luckily, Dr. Leslie Thompkins, a close friend of the Wayne family, managed to restore Tim to normal. However, from that point on, Bruce forbade Tim to ever work as his partner again.

Tim moved on from there and became a communications expert, married and had two children. However, as Terry McGinnis had discovered, while Drake was being held captive by Joker, the Joker put a chip in Drake's body containing a blueprint of his own consciousness, allowing him to periodically hijack Tim's mind and body, with Drake himself being entirely unaware of the changes. Through the unwitting Tim, the revived Joker used the Jokerz gang to steal high-tech equipment so he could assemble a satellite jamming device, which he used to control an orbiting defense system. In a fight between Tim's alter ego and Terry McGinnis as Batman, the new Joker was defeated by Terry destroying the chip that controlled the transformations with the Joker's electric joy buzzer, restoring Tim Drake to normal. During his recovery, Tim saw in Terry someone who was worthy to bear the mantle of Batman.