Grimskull is an old school heavy metal band from Norway. The band was started in the late 80's by the Solheim brothers TJ and Geir, and went through a lot of line-up changes and names until Marita joined on bass in 2009, and they became Grimskull. Their first full-length album "Monster Master" was released in 2012, and in 2013 they recorded a single with Blaze Bayley (Wolfsbane, ex-Iron Maiden) called "Iron Eyes".

Source: Official website