Clas Håkan Jesper Strömblad (born 28 November 1972) 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 quit in 1997 before their first albumGlory to the Brave was released where he is credited for lyrics and incorrectly listed as the drummer[8] (the sessions were recorded with Patrik Räfling).

Renamed Dimension Zero that same year, Strömblad primarily played bass guitar with Jocke Gothberg on vocals and Hans Nilsson on drums.

[14] Strömblad started In Flames as a side project while in Ceremonial Oath to combine Iron Maiden-esque melodies with death metal brutality and keyboards.

After leaving Ceremonial Oath in 1993 he brought in Glenn Ljungström on guitar and Johan Larsson on bass to record a demo.

[16][17]In 2023, Strömblad revealed that his departure from In Flames was partly influenced by his desire to keep their sound "death-metal", while other members wanted to go in a more radio-friendly direction.

[18] Strömblad formed The Resistance in 2011 after discussing the idea with vocalist Marco Aro (The Haunted) while playing the first-person-shooter Call of Duty.

Guitarist Glenn Ljungström (Ex-In Flames), bassist Alex Losbäck Holstad (Despite), and drummer Chris Barkensjö (Carnal Forge, ex-Graves).

Formed in 2017, Strömblad co-founded CyHra,[19] a Swedish heavy metal supergroup with vocalist Joacim "Jake E" Keelyn (ex-Amaranthe), German drummer Alex Landenburg (Kamelot, ex-Annihilator, ex-Axxis), lead guitarist Euge Valovirta (ex-Shining).