[2] In 1996, Jyrki joined forces with Claude, the lead singer of the legendary Finnish rock band Smack to form a side project The Fellow Reptiles.

[4] On Maryslim's 2007 album A Perfect Mess, Jyrki provided guest vocals on their cover of The Sisters of Mercy's "This Corrosion" and also appeared in the music video for the track.

[3] In October 2013, Jyrki joined forces with Danny B. Harvey and Chopper Franklin to form the rock band The 69 Cats.

In 2015, Jyrki collaborated with Los Angeles based Heathen Apostles on the gothic country 4 track Evil Spirits EP.

[6] In 2005 and 2006, he spent time in Kenya and helped campaign against HIV-AIDS situation in the country and against child trafficking and sexual exploitation in parts of West Africa.