Donnie Steele was the original guitarist for Slipknot recruited even before Josh Brainard. He played guitar on their independent demo Mate.Feed.Kill.Repeat.Before Slipknot, Steele was also in a band with current Slipknot members Mick Thompson, Paul Gray and original Slipknot vocalist Anders Colsefini called Body Pit. Steele left the band supposedly because he "found God", but this is unsubstantiated and is left to individual speculation. He did not wear a mask during his time with Slipknot.
Donnie is stated to have rejoined Slipknot for the summer, and will play Bass as a substitute for the late Paul Gray live and possibly in recording for there next studio album. Donnie will not wear a mask, and will not be directly onstage, instead being placed behind the drummer out of view.
Donnie Steele has been a guitarist for 21 years, studying classical guitar for 20 years, and a guitar instructor for 18 years.
He was asked to return to Slipknot in place as Bassist, due to the death of Paul Gray. While the other members play on stage he stays behind Joey.
With the recent release of the music video of The Negative One, there has been speculation that Donnie may have rejoined the band full time nineteen years after his original departure.