Warren Kenneth Worthington III is a superhero appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artist Jack Kirby, the character first appeared in The X-Men #1 (September 1963). Warren is a founding member of the X-Men, having used the moniker Angel. Later stories would reveal that prior to joining the team, he had acted as a vigilante under the moniker Avenging Angel.

Warren is a mutant, an evolved species of humans who are born with superhuman abilities. The character originally possesses a pair of large feathered wings extending from his back, enabling him to fly. He is the heir of the Worthington family fortune, and this privileged background results in Warren being stereotyped as self-absorbed and unable to deal with hardships during his early years with the X-Men. This personality was ultimately replaced with a more introspective and brooding personality in the late 1980s, when the character was changed into the darker Archangel persona. While Warren's wings were originally feathered, his transition to Archangel resulted in metallic wings and newfound powers.

As one of the original X-Men, Warren has had a frequent presence in X-Men-related comic books throughout the years and also appeared occasionally in X-Men animated series and video games. Ben Foster played the role of Warren in the 2006 film X-Men: The Last Stand and Ben Hardy portrayed a younger unnamed version in the 2016 film X-Men: Apocalypse.

The character was created by writer Stan Lee and artist/co-creator Jack Kirby and first appeared in X-Men #1 (Sept. 1963) as Angel. Lee made Angel rich and conceited, as well as a winged human to make him the first Marvel character with wings. He appeared as a regular character in that title until it was cancelled with issue #66. The title was revived shortly after, reprinting earlier issues from issue #67 to #93. In 1970 and 1971, a three-part Angel solo feature was published as a back-up strip in Ka-Zar #2 and #3 and Marvel Tales #30.

Angel appeared in the X-Men revamp by Len Wein and Dave Cockrum in 1975 with the introduction of the "All-New, All-Different X-Men" (Giant-Size X-Men #1 May 1975), but left the X-Men title with issue #94. Angel and fellow X-Man Iceman were transitioned into a new series called The Champions, which ran from 1975 to 1978. Series creator Tony Isabella had wanted to do a series about Angel and Iceman traveling together on the highway, in the vein of Route 66, but the editors told him to make it into a full team book.

Angel returned to the X-Men briefly in The Uncanny X-Men #134, officially returning to the roster in issue #138 before once again leaving in issue #148. Afterwards, the character, along with fellow founding X-Men Beast and Iceman, joined the roster of The Defenders, as part of a short-lived "revamp" of the title, in which the series was renamed The New Defenders. Angel would stay with the title, as the group's leader, for the book's last three years of publication (1983–1986). The series was canceled in 1986 to free up Angel and his fellow X-Men to star in X-Factor, which debuted in February. Angel remained in the book until issue #70, which was the last issue before the book was revamped with an all-new roster. During X-Factor #16–24, the character is presumed dead after losing his wings and apparently killing himself in a plane crash. Angel was dramatically revamped as a character, given a new costume, blue skin, and metallic wings which could fire blades. He first appeared as Archangel in X-Factor #24 (Jan. 1988). According to X-Factor writer Louise Simonson and penciler Walt Simonson, the Archangel revamp was motivated in part by their feeling that Angel was a Mary Sue (being wealthy, handsome, and adored by women), and in part by the fact that, due to the inflation of superhero abilities, Angel was underpowered compared to other characters in the Marvel Universe.

Angel was added to the cast of Uncanny X-Men title and appeared in that series and its companion series X-Men for most of the 1990s. In 1996, Marvel also published a one-shot story simply called Archangel, which was written by Peter Milligan. He also appeared alongside Psylocke in a limited series called Psylocke & Archangel: Crimson Dawn (August 1997 – November 1997, 4 issues). From 1999 to 2001, Angel also featured in the series X-Men: The Hidden Years, which was set in the original X-Men's early days.

Under Joe Casey (2001–2002) and Chuck Austen (2002–2004), Angel became leader of the X-Men team that appeared in the pages of Uncanny X-Men. After Chris Claremont replaced Austen on that title, the character went away for several months before reappearing in the pages of another Claremont-written series, Excalibur (vol. 3 2004). He continued to guest-star in the Incredible Hulk title during the events of World War Hulk (2007) and then returned to Uncanny X-Men (2008-2011) while simultaneously appearing in X-Force (vol. 3) (2008-2010), where the character regained his metallic wings and again assumed the codename Archangel, and subsequently in Uncanny X-Force (2010-2011), in which his mind and personality were wiped.