Harvey Dent (Titans Tomorrow)

In a possible future, Harvey Dent was a Batman rogue who was killed by the 3rd Batman.

History
Before Tim Drake became Batman and killed Harvey, Harvey was a Batman and Robin rogue.

Death
When Dick Grayson retired from the Batman mantle, and was succeeded by Tim Drake, Harvey was among the criminals killed and buried in Arkham Cemetary along with criminals like Scarecrow, Hush, and The Penguin.