Elias "E.Vil" Einari Johannes Viljanen (born 8 July 1975) is a Finnish musician from Tampere, Finland, known for being the guitarist for Sonata Arctica since 2007.

Viljanen joined Sonata Arctica in spring 2007 in order to replace Jani Liimatainen, who left the band in August 2007 to fulfill his civil duties in Finland.

The decision was only made official on 8 August 2007, but Elias Viljanen had been known to replace Liimatainen in concerts during the spring and summer tour.

Around that same time, Viljanen began playing in local bands, heavily influenced by Metallica's early thrash metal.

In 2004, Lion Music again offered Viljanen a record contract when he sent in new demos, and he entered the Studios with Evil Spirit in early 2005.

Liimatainen had apparently not been fulfilling his mandatory civic duties as declared by the Finnish government, and this had caused a rift in between him and the other members of the band.

So, Viljanen entered the studio with Sonata Arctica for the first time in the earlier half of 2009, recording the album The Days of Grays.

[1] He enjoys the racing video game Need for Speed: Underground, likes parrots and his favorite sport is ice hockey.