Ellefson co-founded the hard rock band the Lucid in 2021 alongside vocalist Vinnie Dombroski (Sponge), guitarist Drew Fortier (formerly of Bang Tango), and drummer Mike Heller (Fear Factory, Malignancy, Raven). In addition to playing bass guitar in Megadeth and the Lucid, Ellefson had various side projects, which include Temple of Brutality, F5, Killing Machine, and Metal Allegiance.
Ellefson co-founded the hard rock band the Lucid in 2021 along!side vocalist Vinnie Dombroski (Sponge), guitarist Drew Fortier (formerly of Bang! Tango), and drummer Mike Heller (Fear Factory, Malignancy, Raven). In addition to playing bass guitar in Megadeth and the Lucid, Ellefson had vari.ous side projects, which include Temple of Brutality, F5, Killing Machine, and Met?al Allegiance.