Dan Swano without a doubt. He is a UNHUMAN! Just look for yourself:
Allegiance
Hymns of Blood [size=-2](2002)[/size]Producer Ancient Cainian Chronicle [size=-2](1996)[/size]Producer, Engineer, Mixing Bloodbath Breeding Death [EP] [size=-2](2000)[/size]Drums, Keyboards, Vocals (bckgr), Producer, Engineer Bloodbath Resurrection Through Carnage [size=-2](2002)[/size]Drums, Vocals (bckgr), Producer, Engineer Bombshell Rocks Street Art Gallery [size=-2](1999)[/size]Keyboards Centinex Malleus Maleficarum [size=-2](2003)[/size]Engineer, Mixing Dark Funeral In the Sign [size=-2](2001)[/size]Producer Dawn Naer Solen Garniber [size=-2](2000)[/size]Engineer, Mixing Diabolical Masquerade Nightwork [size=-2](1999)[/size]Percussion, Drums, Keyboards, Vocals, Producer Diabolical Masquerade... Death's Design [size=-2](2001)[/size]Guitar, Keyboards, Producer, Editing, Mixing, Assembly, Ambience Edge of Sanity Spectral Sorrows [size=-2](1993)[/size]Guitar, Arranger, Keyboards, Vocals, Engineer, Mixing Edge of Sanity Purgatory Afterglow [size=-2](1994)[/size]Guitar (Acoustic), Guitar, Arranger, Keyboards, Vocals, Vocals (bckgr), Producer, Engineer, Mixing Edge of Sanity Until Eternity Ends [size=-2](1995)[/size]Guitar, Keyboards, Vocals, Engineer Edge of Sanity Crimson [size=-2](1996)[/size]Guitar (Acoustic), Guitar, Guitar (Rhythm), Keyboards, Vocals, Engineer, Mixing Edge of Sanity Infernal [size=-2](1997)[/size]Bass, Guitar, Piano, Vocals, E-Bow, Talk Box, Piano (Upright) Evoke Dreaming the Reality [size=-2](1998)[/size]Producer, Mixing 59 Times the Pain Twenty Percent of My Hand [size=-2](1997)[/size]Producer, Engineer 59 Times the Pain End of the Millennium [size=-2](1999)[/size]Mixing Gates of Ishtar Dawn of Flames [size=-2](1998)[/size]Producer Ghostorm Frozen in Fire [size=-2](1996)[/size]Vocals (bckgr), Producer, Mixing Hypocrisy 10 Years of Chaos and Confusion [size=-2](2001)[/size]Audio Restoration Katatonia Brave Murder Day [size=-2](1997)[/size]Engineer Katatonia Tonight's Decision [size=-2](1999)[/size]Drums Katatonia Viva Emptiness [size=-2](2003)[/size]Editing Arjen Anthony Lucassen's... Space Metal [Limited Edition] [size=-2](2002)[/size]Vocals Arjen Anthony Lucassen's... Space Metal [size=-2](2002)[/size]Vocals Millencolin Life on a Plate [size=-2](1996)[/size]Vocals (bckgr), Producer, Engineer Millencolin For Monkeys [size=-2](1997)[/size]Engineer Millencolin Lozin' Must [EP] [size=-2](1997)[/size]Engineer Millencolin Melancholy Collection [size=-2](1999)[/size]Vocals (bckgr), Engineer Millencolin Story of My Life Engineer Millencolin Da Strike Engineer Nasum Inhale/Exhale [size=-2](1998)[/size]Editing, Pre-Mastering Nightingale Alive Again: The Breathing Shadow... Guitar, Keyboards, Vocals, Engineer, Mixing, Direction Nightingale Closing Chronicles [size=-2](1996)[/size]Guitar, Drums, Keyboards, Vocals, Engineer, Mixing Nightingale Breathing Shadow [size=-2](1996)[/size]Programming, Multi Instruments, Engineer, Mixing, Cover Design Opeth Orchid [size=-2](1995)[/size]Engineer Opeth Morningrise [size=-2](1996)[/size]Engineer Opeth Orchid [Bonus Track] [size=-2](2003)[/size]Producer, Engineer Opeth Morningrise [Bonus Trick] [size=-2](2003)[/size]Producer, Engineer Ophthalamia Journey in Darkness [size=-2](1999)[/size]Producer, Engineer Opthalamia Via Dolorosa [size=-2](1997)[/size]Engineer Society Gang Rape More Dead Than Alive EP [size=-2](1997)[/size]Producer Theatre of Tragedy Theatre of Tragedy [size=-2](1995)[/size]Engineer, Mixing, Pre-Mastering Therion Theli [size=-2](1997)[/size]Vocals Therion A'arab Zaraq Lucid Dreaming [size=-2](1997)[/size]Vocals Voice of Generation Obligations to the Odd [size=-2](2001)[/size]Engineer, Mixing Various Artists Metalmeister [size=-2](1996)[/size]Producer Various Artists Deathmeister, Vol. 1 [size=-2](1998)[/size]Producer Various Artists Tribute to Poison Idea: Bigger... [size=-2](1998)[/size]Arranger, Engineer, Mixing