1 Iron Maiden
Iron Maiden are an English heavy metal band formed in Leyton, East London, in 1975 by bassist and primary songwriter Steve Harris. The most critically acclaimed period for the band was from 1983-1989. With vocalist Bruce Dickinson, bassist Steve Harris, lead guitarist Dave Murray, rhythm guitarist Adrian ...read more.
Just an observation - most of the bands on this list have had pretty stable lineups. Is friendship the key? - Metal_Treasure
Dave Murray and Adrian Smith are childhood friends, still together in Iron Maiden. - Metal_Treasure
2 Dream Theater
Dream Theater is an American progressive metal band from Boston, Massachusetts. The band was formed in 1985 under the name of "Majesty", only to change its name to Dream Theater later. ...read more.
John Petrucci, John Myung and Mike Portnoy - friends from Berklee College of Music in Boston, Massachusetts. - Metal_Treasure
3 Blind Guardian
Blind Guardian is a German power metal band formed in the mid-1980s in West Germany. They are often credited as one of the seminal and most influential bands in the power metal and speed metal subgenres. Heavily influenced by Queen, they use the technique of overdubbing. They also incorporate large ...read more.
Hansi Kürsch and André Olbrich were school friends in the early 80s and are still together in the band.
Hansi: "I loved to sing but it was an expression of my good mood and never looked at it as my first step in becoming a vocalist. During one of our high school parties I was screaming parts of Ian Gillan and MSG songs. André somehow liked it." - Metal_Treasure
Meshuggah is a Swedish progressive metal band from Umeå, formed in 1987. They are often considered the fathers or founders of the djent metal sub genre due to their use of downtuned guitars. They are also known for their song “Bleed”, which is known for its extremely complicated instrumentation, ...read more.
Tomas Haake and Mårten Hagström have been together since they were 9 yo. They've been playing music since then, still in this band. - Metal_Treasure
5 Children of Bodom
Children Of Bodom is a melodic death metal band from Espoo, Finland. Formed in 1993, the group currently consists of Alexi Laiho, Janne Wirman, Henkka Seppälä, Jaska Raatikainen and Daniel Freyberg.
Alexi Laiho and Jaska Raatikainen have been together since early childhood and founded Children of Bodom when both were at 14. - Metal_Treasure
Tobias Sammet, Jens Ludwig and Dirk Sauer were school friends who are still with the band they founded as teens in 1992. - Metal_Treasure
Korn is an American Nu-Metal band from Bakersfield, California, formed in 1993. The band's current lineup includes founding members Jonathan Davis, James "Munky" Shaffer, Brian "Head" Welch, and Reginald "Fieldy" Arvizu, with the addition of Ray Luzier, who replaced the band's original member, David ...read more.
High school friends - James "Munky" Shaffer, Brian "Head" Welch, Reginald "Fieldy" Arvizu and David Silveria. - Metal_Treasure
Deftones are an American alternative metal band from Sacramento, California. The band, which was founded in 1988, consists of Chino Moreno, Stephen Carpenter, Frank Delgado, Abe Cunningham and Sergio Vega.
Chino Moreno, Abe Cunningham and Stephen Carpenter were all goods friends in high school before they formed the band. - cjWriter1997
Manowar is an American heavy metal band from New York City, New York. Formed in 1980, the group is known for lyrics based on fantasy and mythology.
Eric Adams and Joey DeMaio are childhood friends, still together in this band. - Metal_Treasure
10 System Of A Down
System of a Down formed in 1994 as an Armenian-American Nu Metal group from Glendale, California . The band name is sometimes shortened to System or SOAD. ...read more.
Anvil are a Canadian heavy metal band from Toronto, Ontario, formed in 1978. The band consists of Steve "Lips" Kudlow, Robb Reiner and Chris Robertson.
High school friends - Steve "Lips" Kudlow and Robb Reiner, still together in the band they formed in 1978 (but they began playing music together in 1973) - Metal_Treasure
12 Green Day
Green Day are an American pop punk and alternative rock band formed in East Bay, California in 1987. The members include Billie Joe Armstrong (vocals and guitar), Mike Dirnt (bass), Tré Cool (drums) and Jason White (guitar) . Green Day are associated with punk rock, pop punk and alternative rock. Some ...read more.
13 Battle Beast
These members of the initial line-up were high school friends - guitarists Anton Kabanen, Juuso Soinio and drummer Pyry Vikki. - Metal_Treasure
14 Tokio Hotel
Tokio Hotel are a pop rock band from Magdeburg, Germany, consisting of Bill Kaulitz (singer), Tom Kaulitz (guitar), Gustav Schäfer (drums) and Georg Listing (keyboards, bass) that formed in 2001. ...read more.
All four were school friends and formed a student band called Devilish. Then they got a label contract, their name was changed to Tokio Hotel and the rest is emo history. - Martin_Canine
Urchin was a hard rock band formed in 1972 by childhood friends Dave Murray and Adrian Smith of Iron Maiden. It was active 1972-1980. - Metal_Treasure
16 The Who
The Who is an English rock band formed in London, England in 1964. The most recognizable lineup was Roger Daltrey (lead vocals), Pete Townshend (guitar), John Entwistle (bass guitar), and Keith Moon (drums). They are best known for their live performances and hit songs Baba O'Riley, My Generation, and ...read more.
17 Bon Jovi
Bon Jovi is a hard rock band formed in 1983, which had a streak of successful albums in the late 1980s. The band originally consisted of lead vocalist Jon Bon Jovi, guitarist Ritchie Sambora (left in 2013), bassist Alec John Such (left in 1994), keyboard David Bryan, and drummer Tico Torres. The band's ...read more.
Jon Bon Jovi & David Bryan we’re friends as teenagers.