Carriera Ha suonato nel gruppo melodic death metal Dark Tranquillity e nei Laethora. Ha scritto anche i testi per i primi album dei Dark Tranquillity e per i primi tre album del gruppo melodic death metal In Flames.
È il fondatore della Cabin Fever Media, che si occupa della realizzazione di copertine di album, prettamente in ambito metal, per la quale ha anche pubblicato una raccolta di copertine e bozze inedite. Tra i gruppi principali con cui ha collaborato compaiono Sentenced, Spiritual Beggars, Turisas e Arch Enemy.
Discografia Con i Dark Tranquillity 1989 - Enfeebled Earth (singolo pubblicato col titolo Septic Broiler) 1991 - Trail of Life Decayed (demo) 1992 - A Moonclad Reflection (EP) 1993 - Tranquillity (demo, include Trail of Life Decayed e A Moonclad Reflection) 1993 - Skydancer 1995 - Of Chaos and Eternal Night 1995 - The Gallery 1996 - Enter Suicidal Angels 1997 - The Mind's I 1998 - The World Domination (video) 1999 - Projector 2000 - Skydancer/Of Chaos and Eternal Night (riedizione) 2000 - Haven 2002 - Damage Done 2003 - Live Damage (DVD) 2004 - Exposures - In Retrospect and Denial (compilation) 2004 - Lost to Apathy (EP) 2005 - Character 2007 - Fiction Altri 2007 - March of the Parasite (Laethora, non ancora pubblicato) Collaborazioni 2006 - Gallows Gallery (Sigh, chitarra solista in una traccia)
Copertine di album
Ablaze my Sorrow Anger, Hate, Fury
Aephanemer Prokopton
Ajattara ITSE Kuolema Tyhjyys
Agregator A Semmi Ágán Szürkület
Alas Absolute Purity
Amethyst Dea Noctilucae
Amortis Gift of Tongues
...And Oceans A.M.G.O.D.
Andromeda Extension of the Wish Crescendo of Thoughts Chimera
Arch Enemy Wages of Sin Burning Angel (EP) Anthems of Rebellion Dead Eyes See No Future (EP) Live Doomsday (DVD)
Arise The Godly Work of Art Kings of the Cloned Generation
Armageddon Embrace the Mystery
As Memory Dies Transmutate
Autumnblaze DämmerElbenTragödie Words Are Not What They Seem
Callennish Circle Flesh Power Dominion My Passion // Your Pain Forbidden Empathy
Charon Tearstained Downhearted Little Angel (EP)
Ceremonial Oath The Lost Name of God (EP)
Corporation 187 Perfection in Pain
Dark Tranquillity Haven Projector Skydancer/Of Chaos and Eternal Night Haven Damage Done Exposures Lost to Apathy Character Fiction
Dawn of Relic Lovecraftian Dark
Deadsoil Sacrifice
Detonation An Epic Defiance Portals to Uphobia
Dimension Zero Silent Night Fever This is Hell
Dominion Caligula debut album
Dragonland Astronomy
Dreamaker Human Device
Empyrium Weiland
Enforsaken The Forever Endeavour
Enter Chaos Aura Noir
Enter my Silence Remotecontrolled Scythe
Entwine Gone New Dawn
Eternal Tears of Sorrow Chaotic Beauty The Virgin and the Whore The Last One for Life (EP)
Ethereal Spawn Ablaze in Viral Flames
Eventide Caress the Abstract Promo 2000 No Place Darker Diaries from the Gallows
Eyetrap Folk Magic
Fields of Asphodel Deathflower
Flowing Tears Jade
Fragments of Unbecoming Sterling Black Icon
Gardenian Sindustries Soulburner
Green Carnation Journey to the End of the Night Light of Day, Day of Darkness The Quiet Offspring
Harm Devil
Hortus Animae Funeral Nation / 10 Years of Hortus Animae
Hypocrite Edge of Existence
In Flames The Tokyo Showdown Reroute to Remain Trigger Soundtrack to Your Escape The Quiet Place
Jeremy Edge on the History The 2nd Advent
Kayser Frame the World...Hang on the Wall
Kryptos Sprial Ascent
Lacrimas Produndere Ave End
Last Tribe The Uncrowned
Laethora March of the Parasite
Lost Horizon Awakening the World
Love in the Time of Cholera The Sun Through Glass
Luciferion The Apostate
Lullacry Be My God
Madrigal Enticed (EP) I Die You Soar
Mercenary 11 Dreams
Mirrored Mind At Meridian
Moonsorrow Suden Udi
Mourning Caress Escape
My Blood is Fire The End of Innocence
Mörk Gryning Maelstrom Chaos
Naglfar Sheol
Narcissus Crave and Collapse
Nether Nova Overflow
Nightrage Sweet Vengeance
Novembre Classica
Opposite Sides Soul Mechanics
Passenger In Reverse (EP)
Pathos Katharsis
Red Aim Niagara
Rockateers Louder Than Ever (EP)
Sanctus Aeon Sky
Samadhi Incandescence
Satanic Slaughter Banished to the Underworld
Scaar The Second Incision
Scylla Mater Dolorosa
Shadownation Promo 2001
Sentenced Crimson Killing Me, Killing You (EP)
Silence Enola The P/O/U/R Letters
Sleeping X Sleeping X (EP)
Soultorn Masks
Spiritual Beggars Demons
Sunset Sphere Storm Before Silence
Supreme Majesty Tales of a Tragic Kingdom Danger
The Crest Letters from Fire
The Forsaken Traces of the Past
Thundra Blood of Your Soul
Thyrane Hypnotic
Thyrfing Vansinnesvisor
Time Requiem The Inner Circle of Reality
Turisas Battle Metal
Underthreat Deathmosphere
Urban Tales Signs of Times
Various Artists No Fashion Classics
Veneficum Enigma Prognosis
Vermin - Filthy Fucking Vermin
Witchery Symphony for the Devil (version americana)
Within Y Extended Mental Dimensions
Wolf Wolf (edizione tedesca) Moonshine (EP)
Altri progetti
Collegamenti esterni
Sundin, Niklas Sundin, Niklas