Kelliher, along with Brann Dailor and Brent Hinds, portrayed "wildlings" on season 5, episode 8 of Game of Thrones, which was filmed in Belfast in Northern Ireland.

It has a mahogany body and neck, rosewood fretboard with figured acrylic trapezoid inlays, a gold burst finish and Lace Nitro Hemi humbucker pickups.

[6] In 2014, Gibson released a signature Bill Kelliher “Halcyon” Les Paul, with Lace Dissonant Aggressor pickups.

They are available in Military Green Sunburst Satin finishes with bound bodies and headstocks and ESP flag inlays.

Since 2010, Kelliher and his bandmate Brent Hinds performed live with Orange Thunderverb series amplifiers.

Kelliher also uses an Audiotech Guitar Products Source Selector 1X6 Rack Mount Audio Switcher.

[11][12] In a 2017 appearance on Loudwire's YouTube show Wikipedia: Fact or Fiction?, Kelliher expressed incredulity of ever providing any lead vocals on any of Mastodon's studio albums.