Harvey Dent

Harvey Dent (b. 1972) (d. April 8th, 2003) was the husband of Rachel Dawes and a childhood friend of Bruce Wayne. Coming from a lower-class family than either of them, he became friends with Rachel and Bruce in high school at St. Philomena's Preparatory Academy before he and Rachel entered a romantic relationship. When they graduated, he and Rachel drifted apart from Bruce, eventually getting married. However, when he and Rachel came back to Gotham in 2003, they resumed their friendship with Bruce, though it wasn't the same as it was before due to multiple reasons.
Unfortunately, Harvey and Rachel were both caught up in the events surrounding the Joker's plot against Batman, who they discovered to be Bruce, and were kidnapped by his men. Taken to two different locations, Harvey was at 250 52nd Street when Bruce went to the warehouse where the Joker died and where Rachel was being held. Because of this, with Jim Gordon and Catwoman being unable to reach him in time, Harvey died after falling into the vat of chemicals he had been held over and the ensuing explosion.