Clockwork were:
Peter Waelty - Bass
Peter Haas (Babylon Sad, Calhoun Conquer, Krokus, Mekong Delta, Poltergeist) - Drums
Tommy Vetterli (Coroner, Kreator, 69 Chambers) - Guitars
Lui Cubello - Vocals

https://www.metal-archives.com/albums/Clock..._in_Time/662220