Tim Drake saw the performance in which Dick Grayson's family was murdered, which was the first time he met the first Robin. Eventually, he put the pieces together, Dick being Bruce Wayne's ward and Robin and Batman having similar qualities. Eventually, Tim uncovered their secret identities. After Jason Todd's (the second Robin) death, Tim contacted Dick and informed him of Batman's requirement to have a Robin to keep his sanity. After Nightwing and Batman were captured by Two-Face, Tim donned the Robin suit to save them. After that, Bruce required Tim go through training prior to becoming Robin. After months, Tim Drake became the third Boy Wonder.
Robin appears briefly in Batman: Arkham City, saving Batman from the League of Assassins. He demands to remain in Arkham City to assist Batman in the investigation. Despite his effort, Bruce convinces him to return to Gotham to get his blood sample to a hospital. He is also heard through Batman's earpiece later in the game, where he explains that there are at least 30 people suffering from the effects of Batman and Joker's contaminated blood, putting all of Gotham in danger of exposure to the toxin.
In Arkham City, Robin has both the strength and agility, having a medium stature. He is wearing a red bulletproof vest made out of kevlar along with the "R" logo. He wears a pair of green gauntlets along with fingerless gloves, a yellow utility belt, red spandex pants along with green armored boots. But his mainly feature is his black hoodie-cape and traditional Robin mask.