Following five years of songwriting and recording sessions, the subsequent release of their acclaimed Monotheist album, and a 125-date world tour, mounting tensions began to cripple the resplendently disinterred Celtic Frost by late 2007. The situation eventually rendered it virtually impossible for Warrior to succeed in convening Celtic Frost for songwriting and rehearsal sessions for the intended follow-up to Monotheist. Vastly disenchanted and loath to resign to inactivity, Warrior resolved to establish what was to be a temporary substitute project designed to develop, record, and perform the music and lyrics he envisioned for the projected album. The core of the initially unnamed group was completed by underground bassist Vanja Slajh (formerly of Swiss black metal project Freitod), a close friend from a past production project.
In order to complete the side project, talks with a variety of death/doom/black metal guitarists and drummers followed in early 2008. The dissension within Celtic Frost ultimately proved insurmountable, however, and Warrior left the group on April 2, 2008, due to what his subsequent official statement described as an "irresolvable, severe erosion of the personal basis so urgently required to collaborate within a band so unique, volatile, and ambitious". Warrior later wrote in his blog: "It was not my departure from Celtic Frost which caused the group's inexorable demise. It was the group's inexorable demise which caused my departure."
The side project was now no longer a mere transient substitute to Celtic Frost but rather the descendant. Warrior named it Triptykon, an homage of sorts to the religiously-themed triptych paintings of the dark ages, such as Hieronymus Bosch's Garden Of Earthly Delights (the right panel of which had been used as cover art for Celtic Frost's Into The Pandemonium album in 1987) or Hans Memling's The Last Judgment. Moreover, the name "Triptykon" signifies the third and final occult extreme metal group formed by Warrior after Hellhammer and Celtic Frost; i.e., the completion of his very own triptych.
In late spring of 2008, Celtic Frost's live guitarist, V. Santura of German black metal group Dark Fortress and progressive metal project Noneuclid, joined Triptykon as a full member. Triptykon's initial rehearsal sessions, in late 2008, briefly saw Warrior's long-time friend and former Celtic Frost drummer Reed St. Mark complete the line-up. This configuration proved unsatisfactory, however, and the group subsequently enlisted renowned German progressive drummer Norman Lonhard (Fear My Thoughts, Pigeon Toe). Triptykon absorbed virtually the entire Celtic Frost infrastructure, including Prowling Death Records Ltd., London, the group's own label (and home to Hellhammer and Celtic Frost), now run as a full partnership between Warrior and Triptykon's manager, Antje Lange.
The recording sessions for Triptykon's first album, Eparistera Daimones ("to my left, the demons"), began in August 2009, at Santura's own Woodshed Studio near Landshut, Germany. The album was produced and mixed by Warrior and Santura; it is a persistent development of the virulent and towering musical darkness perpetuated not only by Warrior's early work but also within his extensive contributions to Monotheist. As was to be expected, about half of the music and lyrics on Eparistera Daimones consists of material originally intended for Monotheist's successor. This is balanced by much new, original music written by Warrior and Santura since Triptykon's inception.
Eparistera Daimones was released on March 22, 2010, through Century Media Records, under license by Prowling Death Records Ltd. The album marked a renewed collaboration with legendary Swiss surrealist H.R. Giger, creator of the album's extraordinary front cover painting. The same month saw the publication of Only Death Is Real (Bazillion Points Books, New York) Warrior's second book detailing Hellhammer's existence and the inception of Celtic Frost. Audiences and media met both releases with praise of the highest order.
Triptykon subsequently played close to 100 lauded concerts all across Europe and the UK, Japan, the United States, Canada, and Iceland. Among many other notable appearances, this included a curatorship and headliner slot of the renowned Roadburn Festival, a headliner slot on one of Wacken Open Air's main stages, and a coheadliner tour of North America. Shatter, Triptykon's visionary and highly acclaimed first video, was released in fall of 2010, along with the EP of the same title. In parallel, Warrior was honoured in the course of the 8th Metal Hammer Golden Gods Awards in London, winning the award for inspiration.
Work on the successor of Eparistera Daimones began after the conclusion of touring, in late 2012. Titled Melana Chasmata (“deep, dark valleys/depressions”), the album was yet again recorded a Triptykon's rehearsal facilities in Zurich, Switzerland, and Santura's Woodshed Studio, and produced by Warrior and Santura. Its release in April of 2014 is to be preceded by Breathing, Triptykon's first 7" vinyl single.
In a completely unexpected move, H.R. Giger had approached Warrior in October of 2011 to express his appreciation of how Triptykon had used his art on the first album and to propose a continuation of the artistic collaboration. This development thus marked the first time any musical artist has worked with H.R. Giger on three albums (Celtic Frost's To Mega Therion, and Triptykon's Eparistera Daimones and Melana Chasmata), and it also served to commemorate a collaboration and friendship that had, by now, lasted for 30 years.
Triptykon's music and lyrics reveal a group immersed in themes such as history, occultism, human disintegration, religious fanaticism, and nihilism. Songs such as "Abyss Within My Soul", "A Thousand Lies", "The Prolonging", or "Black Snow" bear witness to wastelands of eternal night. The transcending and mergence of seemingly distinct forms of imagination, a hallmark long prominent in Celtic Frost's efforts, is naturally also abundant within Triptykon's sphere of inspiration, which ranges across the works of, e.g., Pieter Bruegel, Roland Villeneuve, H.R. Giger, HP Lovecraft, Emily Brontë, Hieronymus Bosch, John Martin, and far beyond.