Cosmos enter in the band for first time in 1998, under the name of Brujah for play the guitar. Behind problems with the others members of Avernum, leaved the band for play other different style in a near band called Dosis Noise and too in an Asmund´s project called Thy Arrival as guitar player. Return to Avernum in 2001 behind the musical change and aesthetic for play the bass and with name of Cosmos. After the departure of Hermod, his contribution in the band is very important .