In 1989, after Hateface disbanded, his housemate Dino Cazares invited him to meet a drummer (Raymond Herrera) to possibly work with.

During the following period of inactivity within the band, Cazares and Bell patched up their differences, and in 2009 decided to have Fear Factory return to form.

On February 19, 2008, Ascension of the Watchers released their first full-length album Numinosum through Ministry frontman Al Jourgensen's record label 13th Planet.

In February 2017, Bell rebooted Ascension of the Watchers and began recording at Northstone Studios, South Wales, collaborating with Welsh solo artist Jayce Lewis.

Bell featured as guest vocalist on the Apartment 26 song "Void", a bonus track from their debut album Hallucinating in 2000.

Bell performed live in the encore segments of the Ministry 2008 Tour, singing songs such as "Stigmata", "Thieves" and "So What", taking over vocal duties from Al Jourgensen.

[9] Bell was featured on Chris Vrenna's project Tweaker on the song "I Am the One", intended to appear on the album The Attraction to All Things Uncertain.