The Riddler is a supervillain and an enemy of Batman.
In a fake reality created by Trigon, the Riddler attempted to rob some jewelry stores with some thugs, until they were thwarted by Batman and Robin. However, Robin got cocky and the Riddler surprised him by firing a gun, a weapon he didn't normally use, thus paralyzing Robin in the process.
Years later, the Riddler was a prisoner of Arkham Asylum, and was murdered by Batman.
- Expert marksman: In a fake reality, the Riddler used a gun to shoot Robin in his T5 vertebra, paralyzing him from the waist down and confining him to a wheelchair.