Jason Todd (Earth-Prime)

"Nice try, but nothing beats the one about the time I helped the Joker beat Robin to death with a crowbar. Holiday family classic."

- Kiki Roulette

Jason Todd was the vigilante known as Robin and the sidekick of Batman.

Death in the Family
At some point, Jason Todd became the vigilante known as Robin and the sidekick of Batman. He was later beaten to death with a crowbar by the Joker and Kiki Roulette.