Early years (1982–1986)
Death Angel was formed in the San Francisco Bay Area, California, in 1982 by cousins Rob Cavestany (lead guitar, backing vocals), Dennis Pepa (lead vocals, bass), Gus Pepa (rhythm guitar), and Andy Galeon (drums) -- all of Filipino descent. After considering a number of different names for the band, including Dark Fury, Cavestany and D. Pepa settled on the name Death Angel after coming across a book by that title in a book store. In 1983, the band released their first demo, Heavy Metal Insanity, with Matt Wallace serving as producer. According to Mark Osegueda, the group was then "more like a metal band, more like Iron Maiden, Tygers of Pan Tang and stuff like that", as the so-called Bay Area thrash movement was only just beginning to rise to prominence at the time and make its influence felt. Osegueda, a second cousin of the other four members who had been working as their roadie, became the group's lead vocalist in 1984 and performed his first show with the band on a bill with Megadeth in April of that year (at one of the four Megadeth gigs to feature Kerry King on guitars).
Death Angel continued to play club gigs in and around the San Francisco Bay area for nearly two years, writing songs and refining their stage show. In 1985, the band recorded the Kill as One demo produced by Metallica's Kirk Hammett, whom they had met at a record store signing in 1983. The underground tape trading wave of the 1980s led to extensive distribution of the demo, bringing the band wide attention. Osegueda later recalled that prior to the release of the band's first album, "We were playing in L.A. and New York, and the crowd was singing our songs, because there was this underground tape trading .... That's what keeps it alive, and I think that's absolutely wonderful." 
In 1986, Death Angel performed at their Concord, California high school, Clayton Valley High School (now known as Clayton Valley Charter High School), at lunchtime. They famously dedicated the song "Mistress of Pain" to a Vice Principal.
The Ultra-Violence and Frolic Through The Park (1987–1989)
The success of Kill as One led to a record deal with Enigma Records, who released Death Angel's debut album, The Ultra-Violence, in 1987. The band recorded the album when all the members were still under 20 years old, and subsequently embarked on its first tour, supporting such bands as Exodus, Destruction, Voivod, Sacrifice and Whiplash. A video was filmed for "Voracious Souls", a song about a band of cannibals, but it never aired on MTV due to the nature of the lyrics. The group released their follow-up album Frolic Through the Park in 1988. It featured more diverse material than the straightforward thrash of the first album. It included a cover version of the Kiss song "Cold Gin". The band released a video for the single "Bored" (which was also used in the 1990 movie Leatherface: The Texas Chainsaw Massacre III) which received regular airplay on MTV's Headbangers Ball. The song was written under the seemingly unlikely influence of U2, and the guitar playing of The Edge in particular. The band toured worldwide for the first time (with the likes of Motörhead, Testament, Flotsam and Jetsam, Overkill, Rigor Mortis, Sacred Reich, Forbidden, Vio-lence and Death) and found notable success in Japan, selling out two full Japanese tours.
Act III and breakup (1989–1991)
Geffen Records bought out the band's contract with Enigma Records in 1989 and released the third Death Angel album, Act III, in 1990. Produced by Max Norman (who had previously worked with Ozzy Osbourne, Megadeth, Savatage, Fates Warning and Loudness), the album showcased the band's newfound use of full-band backing vocals, while fusing elements of funk, thrash, and heavy metal with the use of acoustic guitars to give the album a varied feel, while staying true to the group's heavy roots. The album featured the singles "Seemingly Endless Time" and "A Room with a View" (a ballad sung mostly by guitarist Rob Cavestany), and both songs also received airplay on Headbangers Ball, but a mainstream breakthrough still proved elusive. The band released the "A Room with a View" video and single under the name "D.A." and Cavestany explained to a reporter at the time that he now found the band's original name "Restricting. The name Death Angel seems to imply hardcore thrash gloom-and-doom death metal, and we're not like that at all. If I were presented with 10 records, and one of them was by a band called Death Angel, and I'd never heard of them, I'd stick that one on the bottom!" 
Also in 1990, Enigma Records, already having sold its interest in the band to the Geffen label, illegally released and distributed Fall from Grace, an unauthorized bootleg live album featuring songs from their first two releases and recorded at the Paradiso in Amsterdam, Netherlands. The album was released without any input from the band members with regard to its songs, contents, credits, concepts, or artwork. The band learned of its existence when they stumbled upon it in a record store in Tucson, Arizona, on the night prior to suffering a near-fatal auto accident. Enigma Records folded after the release, cashing in on the sales. The album was picked up, manufactured and distributed by Capitol Records, also possibly illegally.
Death Angel had embarked on what was scheduled to be a worldwide tour in support of Act III in 1990, selling out shows at the Warfield Theatre in San Francisco, The Ritz in New York, and England's Hammersmith Odeon, and touring, or playing selected shows, with the likes of Forbidden, Vicious Rumors, Sanctuary, Sepultura, Sacred Reich, Morbid Angel, Atheist, Forced Entry, Dead Horse and former Megadeth guitarist Chris Poland. While driving in Arizona en route to a show in Las Vegas, the group's tour bus crashed, and drummer Andy Galeon was critically injured, needing more than a year to recover. Cavestany said at the time that "[i]n a way, it made perfect sense to have a major accident right now, it really fit the story line. We've been pushing so hard for 8 years and just not getting that far, and getting so frustrated with not being where we should be after so long, it was time for something climactic to happen!"  The band was also slated to be the opening act for the Clash of the Titans tour featuring Megadeth, Slayer, and Anthrax in the summer of 1991, but were ultimately replaced by Alice in Chains since they were unable to perform. Additionally, Death Angel and Geffen were planning to release a live album recorded at shows in the Bay Area, and the band was intending to tour a number of other countries it had not previously visited. According to Cavestany, they were invited to tour Europe with Annihilator and Judas Priest, supporting the latter on their Painkiller tour; however, due to the bus accident, Death Angel cancelled the offer and was replaced by Pantera.
Following the accident, Geffen Records and the band's manager pressured the group to hire another drummer and immediately go back to work. The band performed a few shows in Japan with drummer Chris Kontos, but when they declined to hire a long-term replacement, Geffen Records dropped them.
Osegueda left the group and moved to New York to pursue a life outside of music, and Cavestany later explained that "[w]e weren't going to try to replace him and with all that stuff happening we were just totally disgusted at how things had turned out and we felt that this was a sign that the band was not going to go on."  The remaining members performed a few acoustic-only shows in the Bay Area, appearing as "The Past."
In the summer of 1991, with Galeon fully recovered, Death Angel's remaining members, minus Osegueda, reformed under the name The Organization (which was the title of a song on Act III), with Cavestany taking over lead vocal duties. The band focused more on funk and alternative rock than traditional metal. The Organization's first demo was recorded and produced at City College of San Francisco's multitrack studios by Eric Kauschen and Dana Galloway.
The Organization toured extensively throughout the United States and Europe, including two appearances at the Dynamo Open Air Festival in the Netherlands, a support slot on Rob Halford's "Fight" tour, and as the main support act for Motörhead in Europe. However, both 1993's The Organization and 1995's Savor the Flavor albums, which were distributed by Metal Blade Records, failed to make waves with the record-buying public, and Cavestany and Galeon decided to disband.
Around 1992, Osegueda was invited to audition for Anthrax after the departure of Joey Belladonna. The band eventually hired John Bush of Armored Saint, and Anthrax guitarist Scott Ian later wrote that Osegueda "had a great voice but was strangely too metal for us."
In 1998, Cavestany and Galeon reunited with Osegueda for the first time since 1990. Along with bassist Michael Isaiah, they formed Swarm and released a four-track self-titled EP in 1999, and the five-song Devour EP in 2000. Swarm toured with Jerry Cantrell of Alice in Chains in 2000, and released the compilation album Beyond the End, which combined the contents of the two EPs with a cover of The Doors' "My Eyes Have Seen You", in 2003. Although Swarm did not become a commercial success, it did bring the core members of Death Angel back together, setting up an official reunion.
Reunion and The Art of Dying (2001–2007)
Death Angel officially reunited in August 2001 for Thrash of the Titans, a cancer benefit show for Testament frontman Chuck Billy. Original guitarist Gus Pepa could not participate in the reunion since he was out of the country. At Cavestany's suggestion, and with Pepa's blessing, the band enlisted longtime friend and fan, Ted Aguilar, to handle rhythm guitar duties. Originally planned as a one-off show, the band received such a positive response that they played a string of other well-received gigs around the San Francisco area and a pair of European tours, despite the band not having issued an album in over a decade. They also participated in Wacken Open Air and the Bang your Head 2004.
In 2004, 14 years after their last album, the band released The Art of Dying on Nuclear Blast records. Archives and Artifacts, a box set with remastered versions of the long out-of-print The Ultra-Violence and Frolic Through The Park, along with a bonus Rarities CD and DVD, followed in 2005.
Osegueda has since announced his involvement in the band All Time Highs, but has emphasized that he intends to remain a member of Death Angel. In August 2007, Cavestany released a solo CD of acoustic songs, Lines on the Road, the material on which was written in collaboration with Gus Pepa, and performed by Cavestany (vocals, bass, guitar) Gus Pepa (guitar) and Galeon (drums).
Killing Season (2007–2009)
In April 2007, they headlined the seventh Pulp Summer Slam in the Philippines. Killing Season, recorded at Dave Grohl's Studio 606 in Northridge, California, was released on February 26, 2008. Death Angel's video for "Dethroned", a track off Killing Season, debuted online on Thursday, April 17, 2008, on Headbangers Blog.
At the October 28 show at the Grand in San Francisco, Death Angel announced that founding member Dennis Pepa would be leaving the band and the show would be his final live performance with the band.
On January 10, 2009, Death Angel announced the addition of bassist Sammy Diosdado to the group's ranks. Diosdado is a Bay Area native who previously played with the San Francisco hardcore band The Sick and is a member of the rock and roll outfit All Time Highs, which is fronted by Osegueda.
Relentless Retribution (2009–2012)
Death Angel headlining in Toronto, 2013
On May 28, 2009, Death Angel announced founding member Andy Galeon had quit the band, leaving Cavestany as the only founding member left in the band. He was replaced by Will Carroll (formerly of Scarecrow, Old Grandad and Vicious Rumors). In November, Diosdado was replaced by Scarecrow / Potential Threat bassist Damien Sisson.
Relentless Retribution was released on September 3, 2010 in Europe. The album was recorded at Audiohammer Studios in Sanford, Florida with producer Jason Suecof (Trivium, August Burns Red, The Black Dahlia Murder, All That Remains, Whitechapel, DevilDriver), and was the first Death Angel album done without longtime drummer Andy Galeon as well as its first done without either of the Pepa cousins. Death Angel toured in support of Relentless Retribution for two-and-a-half years; the band embarked on the European Thrashfest tour in late 2010 with Kreator, Exodus and Suicidal Angels, and supported Anthrax and Testament on the Worship Music tour in North America three times (in October–November 2011, January–February 2012 and September–October 2012).
The Dream Calls for Blood, The Evil Divide and Humanicide (2013–present)
Death Angel released The Dream Calls for Blood on 11 October 2013. The album landed at 72 on the Billboard 200, making it the band's first chart entry since 1988's Frolic Through the Park, and their first to crack the Top 100 on the American charts.
In a May 2015 interview on Groovey.TV, rhythm guitarist Ted Aguilar revealed that Death Angel had been writing new material for their follow-up to The Dream Calls for Blood. The band entered the studio on October 1, 2015 to begin recording the album, which was due for release in April 2016. On February 16, 2016, it was announced that the album would be called The Evil Divide; it was released on May 27, 2016 and peaked at number 98 on the Billboard 200, giving the band their second highest chart position. Death Angel toured for two-and-a-half years in support of The Evil Divide, opening for Slayer on their Repentless tour in North America, Testament on their Brotherhood of the Snake tour in Europe, and Sepultura on their Machine Messiah tour in Australia, as well as taking part in the 2018 edition of the MTV Headbangers Ball European tour, also featuring Exodus, Sodom and Suicidal Angels.
In a February 2017 interview with The Void Report, Aguilar revealed that Death Angel would begin working on new material in the fall. In December of that year, guitarist Rob Cavestany stated that, instead of touring extensively, they would spend much of 2018 focusing on writing and recording their ninth studio album. On June 30, 2018, the band issued this statement on Facebook: "Now it's time to head home, lock ourselves in the studio and finish writing this new album." It was reported in September 2018 that Death Angel had been in the studio recording their new album, again teaming up with Jason Suecof (who has worked with the band since Relentless Retribution) as the producer.
On March 22, 2019, Death Angel announced that their ninth album Humanicide would be released on May 31 via Nuclear Blast. Prior to the album's release, they (along with Mothership) toured North America in the spring of 2019 by supporting Overkill on their Wings of War tour. The band also toured through Europe that summer, opening for bands like Arch Enemy, Testament and Anthrax on selected dates as well as headlining their own shows, and will be one of the performers at Megadeth's first-ever MegaCruise in October. Death Angel will continue to tour in support of Humanicide in 2020, including taking part in the European tour The Bay Strikes Back with Testament and Exodus that February–March.