Two of the nine-volume comics were adapted into two anime original video animation episodes titled Battle Angel for North American release by ADV Films and the UK and Australian release by Manga Entertainment. Manga Entertainment also dubbed Battle Angel Alita into English. A live-action film adaptation titled Alita: Battle Angel is scheduled for release on February 14, 2019.
A two-episode OVA was released in 1993, incorporating elements from the first two volumes of the manga with changes to the characters and storyline. According to Kishiro, only two episodes were originally planned. At the time, he was too busy with the manga “to review the plan coolly,” nor was he serious about an anime adaptation. It remains the only anime adaptation of Battle Angel Alita to date and there are no plans to revive it. Alita as depicted in the CG movie A 3-minute 3D-CGI rendered movie clip is included in volume 6 of the Japanese Gunnm: Complete Edition. It showcases Alita in a Third League Motorball race with players from two of her races such as “Armor” Togo, Degchalev, and Valdicci, and depicts events from both of those races.
Director James Cameron has rights to the film adaptation of Battle Angel. Cameron is said to be a big fan of the manga, and he was waiting until CGI technology was sufficiently advanced to make a live-action 3D film with effects comparable to Avatar.
Alita was originally scheduled to be his next production after the TV series Dark Angel, which was influenced by Battle Angel Alita. After Avatar, he stated he would work on Avatar sequels before starting Alita.
Cameron’s producer Jon Landau said, “I am sure you will get to see Battle Angel. It is one of my favourite stories, a great story about a young woman’s journey to self-discovery. It is a film that asks the question: What does it mean to be human? Are you human if you have a heart, a brain or a soul? I look forward to giving the audience the film.” It will likely not hit screens before 2017. Landau half-jokingly stated that the project may be titled Alita: The Battle Angel, because of Cameron’s tradition in naming his films with either an “A” or a “T”.
Cameron’s film would be a live-action adaptation of the first four volumes of the manga series; “What I’m going to do is take the spine story and use elements from the first four books. So, the Motorball from books three and four, and parts of the story of one and two will all be in the movie.” He has also stated that he has no one in mind for casting yet.
In October 2015, it was reported that Robert Rodriguez will direct the film with Cameron and Landau producing. On April 26, 2016, both The Hollywood Reporter and Variety reports that Maika Monroe, Rosa Salazar, Zendaya and Bella Thorne were in the running for the lead role. At near the end of May 2016, Salazar was cast as Alita. The film is scheduled for release on July 20, 2018. On February 7, 2017, The Hollywood Reporter reports that Jennifer Connelly will be joining the cast as one of the villains. On December 8, 2017, the first trailer for Battle Angel was released to the public. It was reported by JoBlo.com in February 2018, that the film was delayed to December 21, 2018. In late September 2018, it was announced that the film was delayed again, to February 14, 2019, in order to allow “more room to grow in the box office”, as well as avoiding competition with WB’s Aquaman, Paramount’s Bumblebee and Universal’s Welcome to Marwen.
In November of 2018, Titan Books published Alita: Battle Angel – Iron City, a prequel novel for the film. The novel was written by Pat Cadigan, a notable science fiction author.
Gunnm: Martian Memory is an action RPG video game for the PlayStation by Banpresto. It is an adaptation of the manga, following Alita (Gally) from her discovery in the Tiphares dump heap by Daisuke Ido up through and beyond her career as a TUNED agent. The story includes additional elements that Kishiro had conceived when he ended the original manga in 1995, but was unable to implement at the time, which involved Alita going into outer space. He then expanded the story, which formed the basis for the manga Battle Angel Alita: Last Order.
- Ashen Victor, a story set six years before the beginning of Battle Angel Alita. It primarily tells the story of a Motorball player and it sets the evolution of the game into what it becomes in the Battle Angel Alita series.
- Battle Angel Alita: Last Order, a continuation published monthly in Ultra Jump, and then in Evening.
- Battle Angel Alita: Mars Chronicle, a continuation of Battle Angel Alita: Last Order published in Evening.