1 Jason Newsted (Metallica)
Jason Curtis Newsted is an American metal musician, known for being the third bass guitarist with the band Metallica from November 1986 until his departure in January 2001, he was also a part of Voivod and Flotsam and Jetsam.
2 Mat Sinner (Primal Fear)
Mat Sinner is a bassist, vocalist, songwriter and record producer from Stuttgart, Germany. He is best known as the bassist and primary songwriter for the metal band Primal Fear.
A bassist, who is a lead singer for another band - his vocals are that good. - Metal_Treasure
3 Kai Hansen (Helloween)
Kai Michael Hansen is a heavy metal guitarist and vocalist. Hansen is the founder, lead guitarist, and vocalist of power metal band Gamma Ray. He is also the co-founder and former member of German metal band Helloween.
He's a very unique case because he's basically a lead G player (all the time) but he's been switching from lead to backing vox and vice versa:
In Helloween - first lead vox and then backing vox.
In Gamma Ray - first backing vox and then lead vox.
Maybe he should be in the first place? - Metal_Treasure
4 Jon Schaffer (Iced Earth)
Jon Ryan Schaffer is an American heavy metal musician. He is best known as the guitarist and last remaining original member of the Florida-based heavy metal band Iced Earth, which he formed in 1985 under the name "Purgatory".
He's awesome and he even does lead vox for his side project 'Sons Of Liberty' - not bad at all. - Metal_Treasure
5 Jeff Waters (Annihilator)
Jeff Waters (born February 13, 1966) is a Canadian metal musician and founder of the metal band Annihilator. He's best known as the guitarist for Annihilator, appreciated for his fast riffs and solos. Waters is also the primary songwriter in the band. Very often he has taken on the role of lead singer, ...read more.
His backing vox on Alison Hell are more interesting than the lead vox. He can also do lead vocals pretty good and he recorded all lead vox on 3 albums and some songs on other albums (songs - King of the Kill; 21; Fiasco). - Metal_Treasure
6 Timo Tolkki (Stratovarius)
Timo Tapio Tolkki is a Finnish musician best known as the former guitarist, songwriter and producer of the power metal band Stratovarius.
7 Jason James (Bullet for My Valentine)
8 Adrian Smith (Iron Maiden)
Adrian Frederick "H" Smith is an English guitarist, best known as a member of Iron Maiden, for whom he writes songs and performs live backing vocals on some tracks.
9 Shayley Bourget (Of Mice and Men)
10 Ben Bruce (Asking Alexandria)
11 Marcus Siepen (Blind Guardian)
Marcus Siepen is a German guitarist and backing vocalist, most known for being the rhythm guitarist of power metal band Blind Guardian.
12 Jordan Fish (Bring Me the Horizon)
13 Ahren Stringer (Amity Affliction)
14 Daron Malakian (System of a Down)
Daron Vartan Malakian is an Armenian–American singer-songwriter, multi-instrumentalist, and record producer.
15 Criss Oliva (Savatage)
Christopher "Criss" Michael Oliva was an American musician who was the lead guitarist and co-founder of the band Savatage.
16 Corey Beaulieu (Trivium)
Corey King Beaulieu (Born November 22nd 1983) is an American musician and actor, known for being the lead guitarist and backing vocalist for the Heavy Metal band Trivium.
17 Max Green (Falling In Reverse, Escape the Fate)
18 Arto Järvinen (Teräsbetoni)
19 Kirk Hammett
Kirk Lee Hammett is the lead guitarist and songwriter for the heavy metal band Metallica and has been a member of the band since 1983. Before joining Metallica he formed and named the band Exodus.
I've never heard his backing vocals - Userguy44
20 Cliff Burton
Clifford Lee "Cliff" Burton (February 10th 1962 - September 27th 1986) was an American musician, best known as the second bass guitarist for the American thrash metal band Metallica, recording three studio albums. He died in 1986 after getting crushed by a tour bus in Copenhagen whilst promoting Metallica's ...read more.
21 Scott Ian
Scott Ian is an American musician, best known as the rhythm guitarist, backing and additional lead vocalist, and the only remaining original founding member of the thrash metal band Anthrax. He also writes the lyrics on all their albums.
22 Mike Shinoda (Linkin Park)
Michael Kenji "Mike" Shinoda is an American musician, rapper, singer, songwriter, record producer, graphic designer, manager and film composer.
23 Zacky Vengeance (Avenged Sevenfold)
Zachary James Baker, better known by his stage name Zacky Vengeance, is an American musician, best known as the rhythm guitarist, backing vocalist, and founding member for the American alternative metal/ metalcore band Avenged Sevenfold. Zacky V. also owns a small clothing company, Vengeance University. ...read more.
24 Pepper Keenan (Down; Corrosion of Conformity)
He's a back vocalist but check out his lead vox on 'Vote With A Bullet' by Corrosion of Conformity - amazing. - Metal_Treasure
25 Arttu Lesonen (Lost Society)
26 Robert Trujillo
Roberto Agustin Trujillo, better known as Robert Trujillo, is an American musician known for his role as the current bassist of heavy metal band Metallica.
27 Dave Mustaine
David Scott "Dave" Mustaine (born September 13, 1961) is an American musician, singer, songwriter, actor and author. Mustaine is best known as a pioneer in Thrash Metal, being the former lead guitarist of Metallica before his dismissal in 1983, leading to finding and becoming the front man of his own ...read more.
But he is the lead singer? - Userguy44