Hiei

"I've been under too much stress lately. Killing you should be a good remedy."

- Hiei

Hiei is one of the main protagonists of the Yu Yu Hakusho series. He will appear in the 115th episode of Death Battle, Sasuke VS Hiei, where he will fight against Sasuke Uchiha from the Naruto series.

DBX
Hiei appeared in Season 1 of DBX, where he fought against his Death Battle opponent Sasuke Uchiha over a Hello Kitty doll, with both ending up dying in a spiked pit.

One Minute Melee
Hiei appeared in Season 4 of One Minute Melee, where he fought against Killua Zoldyck from the Hunter x Hunter series and won.

Trivia

 * Hiei and his opponent are the 16th and 17th Shueisha characters in Death Battle, after Vegeta, Son Goku, Majin Buu, Gaara, Hercule Satan, Roronoa Zoro, Portgas D. Ace, Android 18, Naruto Uzumaki, Ichigo Kurosaki, Jotaro Kujo, Kenshiro, Lucy, Master Roshi and Jiraiya.
 * Hiei and his opponent are the first two combatans to fight against each other in both Death Battle and DBX.