Originally a studio project headed by former No Sin Evades His Gaze guitarist Kevin Pearson and vocalist Matthew Moss, in 2018 the group expanded into a full lineup with the addition of No Sin Evades His Gaze bassist Matthew Lowe, and The Black Dahlia Murder drummer Alan Cassidy.
Slugdge was originally formed by friends Kevin Pearson and Matt Moss in 2012, as a response to the amount of sludge metal groups named after animals.
They released their first three albums, Born of Slime (2013), Gastronomicon (2014) and Dim & Slimeridden Kingdoms (2015) independently through Bandcamp (the latter two being featured by Stereogum's best of lists for their respective years[2]), before signing to Willowtip Records in 2017.
[3] Shortly after the album's release, which topped Bandcamp's metal chart, the pair unveiled Matthew Lowe as the group's full-time bassist.
[4] Then, on 9 April 2018, the full lineup was completed by the arrival of Alan Cassidy of The Black Dahlia Murder on drums.