There are at least five artists named "Diablo":
1) A Four piece Finnish melodic death metal band formed in 1995.
2) A Korean thrash metal band.
3) An experimental Chilean screamo/post rock band
4) An Amiga demoscene musician active in the early and mid 1990s
5) An obscure heavy metal band from the Philippines formed in the early 70s.
1) Diablo was born in the late 1990s in Finland. They recorded it´s first mini-album "Princess" catching a record deal with Poko Rekords. Read more on Last.fm