The Robin first appeared in Lego Batman - The Robin. He is voiced by Forrestfire101.
The Robin Story[]
After getting tired of being Batman treating him like crap Robin left Batman. Batman didn't really care and threatened told Robin he would find another sidekick. Batman (after 602 interviews) picks Spiderman as his sidekick. Meanwhile at the villains hideout Robin asks the Joker if he can join the villains and shows him Bomb blueprints which Batman drew. He also requests if he can wear black and be called 'The Robin.'
For 2 weeks Batman and Spiderman have been looking for Robin. Spiderman tells Batman that he's bored of searching for Robin but Batman tells him that Robin stole Bomb Plans from him. Then a ticking sound starts and Batman notes that the Bomb has been activated. Spiderman replies 'that is pretty obvious Batman.' Batman just says that all great Superheroes say obvious stuff out loud.
Batman and Spiderman arrive at the Villain's Hideout. Batman is shot in the head by The Robin. Spiderman then gets into a big fight with Robin being shot loads of times still surviving though. (bulletproof vest?) There is a super-slow mo replay of Spidey punching The Robin killing him. After the Forrest Ending Logo Batman reveals he is not dead.