Clas Håkan Jesper Strömblad is a Swedish musician who is the guitarist of the bands The Halo Effect, Dimension Zero and Cyhra, and formerly of In Flames and The Resistance. He is best known as the founder and former guitarist/drummer/keyboardist of the pioneering melodic death metal band In Flames, guitarist of the band Sinergy, bassist of Ceremonial Oath and drummer of HammerFall. In 2013, he joined MDM band Nightrage as a session guitarist.

Björn Gelotte is a Swedish musician and songwriter, best known as the lead guitarist for Melodic death metal band In Flames. He originally joined the band as the drummer in 1995, and continued in this position during The Jester Race (1996) and Whoracle (1997). He switched to his current position on lead guitar after Glenn Ljungström left the band and played solely guitars since Colony (1999), sharing lead/rhythm guitar work with former In Flames guitarist Jesper Strömblad.