Kjetil 'Frost' Haraldstad

Kjetil-Vidar Haraldstad (stage name Frost; born 28 June 1973) is the Norwegian drummer in black metal bands Satyricon and 1349. He was born in Øyer, Oppland.

Frost has previously performed with Gorgoroth, Zyklon-B, Gehenna and Keep Of Kalessin. He originally joined Satyricon temporarily to record the demo The Forest is My Throne, later joining the band full-time. He has a degree in Engineering, having taken a course in Computer Science at the University of Oslo.

He is regarded as one of the fastest and most proficient drummers in the black metal and extreme metal genres. Frost employs various drumming styles when performing with different bands; in 1349 and early Satyricon he extensively uses blast beats, with his most recent work in Satyricon being more thought-out and mid-tempo. On 1349's 2009 studio album Revelations of the Black Flame he played at a slower speed as it was a more experimental album, but for every other release by the band he has consistently played at higher speeds. On all Satyricon albums his role is credited simply as "battery".