Producer Fredrik Nordström had the ambition of creating a power metal band of his own for a long time, but had difficulty finding anyone with musical ideals similar to his own.

The first person asked to join the new band was Snowy Shaw (from King Diamond, Mercyful Fate and Notre Dame), but the drummer initially refused their invitation.

Vocalist Niklas Isfeldt had done backing vocals for some of HammerFall's songs produced by Nordström, and since he was not involved in any major projects at the time, he agreed to take the position.

The band soon got a deal with Century Media Records, and intended to name themselves Dragonslayer due to the medieval and fantastical themes of the songs written by Gus and Nordström.

With little time on their hands, the band wrote the basis of several songs on the flight back to Europe, and on the day of their arrival entered the studio in order to record a new album.

After a period of silence for several months, Dream Evil announced Pat Power (Patrik Jerksten), a co-worker of Fredrik Nordström from Studio Fredman, as Snowy's replacement.

Dream Evil announced on 7 December 2007 on the website that Mark Black would be leaving the band and will be replaced by Daniel Varghamne aka Dannee Demon.

Immortals was cemented along with other bands in EA's third round of songs that picked up the punk and heavy metal genres on a bigger stage.