Deducing the identities of Batman and Nightwing, Timothy Drake revealed this knowledge to them and argued the need for a Robin to give Batman hope in the face of the darkness he fights. After months of training, Timothy himself became the new Robin; keeping his secret identity as Batman's crimefighting partner secret from his parents, Jack and Janet Drake.
In an alternate future where the battle between heroes and villains has esculated into war, Harley Quinn wears Robin's tattered cape during the Battle of Metropolis as she assists the Joker in killing heroes.
Robin is an iconic hero who appears at various locations in Gotham City as part of the More Than You Can Chew and Fanboy feats. If a hero encounters him he will make a comment and then disappear, if a villain encounters him he will knock them back and then leave.
Talking to Robin while in the Watchtower can lead to him giving the player various comments on his life as a member of the Bat Family as well as being a member and leader of Young Justice and the Teen Titans.
During one of the conversation strings, Robin's voice actor, Wil Wheaton, seems to stumble on the word "classes" before recovering and restarting the sentence. It is unknown why this stumble was included in Robin's conversation strings but one may argue that it helps humanize Robin as a kid who sometimes trips over his tongue like most people do from time to time.
Robin's collapsible staff is a heavily modified weapon, built to include hidden compartments for extra storage and a 320 gigabyte MP3 player for "those long stakeouts".
Robin reveals that the secret for balancing crimefighting at night and classes during the day is coffee. Lots of coffee.
A villain character can get Robin's Utility Belt as an iconic drop.