Android 18

Android 18 is an antagonist-turned-heroine from Dragon Ball Z. She will appear in the upcoming 78th episode of DEATH BATTLE!, Android 18 VS Captain Marvel, where she will face off against Captain Marvel from Marvel Comics.

Character History
Originally named Lazuli, Android 18 was kidnapped by Dr. Gero and turned into a cybernetic android as part of his revenge plan against Son Goku. When she and her brother Android 17 were activated, they turned on Gero and left to kill Goku off on their own with Android 16 (another one of Gero's creations).

However, after being around Earth's landscape and scenery, she changed her tone of destroying the planet and killing Goku. She would soon marry Krillin and became one of the top female fighters in the Z-Fighters.

Trivia

 * Android 18 is the 5th Dragon Ball character to appear in DEATH BATTLE, (the first 4 were Vegeta, Goku, Majin Buu & Hercule Satan).
 * She's the sixteenth Anime/Manga character to get into DEATH BATTLE with the last fifteen being Vegeta, Goku, Strider Hiryu, Gundam Epyon, Majin Buu, Gaara, Guts, Hercule Satan, Astro Boy, Agumon, Roronoa Zoro, Erza Scarlet, Voltron Lion Force, Natsu Dragneel and Portgas D. Ace.
 * She's also the first female Dragon Ball character to appear in DEATH BATTLE!.
 * Android 18 is the first Dragon Ball character to fight a Marvel Comics character.
 * Android 18 is the second anime female to appear in DEATH BATTLE. (Erza Scarlet was the first)