All time bands who made metal what it is
1. Black Sabbath - the first metal band period, so they get the nod.
2. Iron Maiden - perhaps the biggest repetoire of any metal band in history, was a major part of the 80's movement.
3. Metallica - Not only the most famous metal band of all time, but their heavy style was a major part in developing metal into an extreme genre of music.
4. Ronnie James Dio - You can argue his popularity, but his powerful vocals and success with so many pioneer bands was a major part in metals progression, especially with power metal. Technically not a band, but still.
5. Eddie Van Halen - not van halen the band. they were way to light for metal in my opinion. But Eddie was the first to use the legendary guitar distortion that so many guitar players from the eighties adopted.
6. Cannibal Corpse - glamorized the extreme metal genres.
7. In Flames & Dark Tranquility - pioneered melodic death metal, combining great melodious ideas with extreme metal, eventually leading to the metal core genre.
8. Slipknot - had a huge influence on the direction of american modern metal.
9. Disturbed - Keeping classical metal alive with a touch of thrash, and has become the most recognized metal band in north america today. They are lower on the list because they have a smaller influence on other bands.
10. Slayer - was the first band to completely leap over the line with controversial lyrics, and in turn, has caused every metal band that followed them to write with an uncensored approach.