| Berserk | Line Up : Mike O'Brien [Vocals], Vincent Lyons [Guitar], Martin Kelliher [Guitar],
Paul O'Mahony [Drums & Vocals], Aidan McCarthy [Drums & Vocals],
Denis Herlihy [Guitar] Active : 1977 - 1979 |
| Orpheus | Line Up : Vincent Lyons [Guitar], Ger Hennessy [Guitar], Paul O'Mahony [Bass Guitar],
Padraig Murphy [Drums] Active : 1980 - 1980 |
| Vice Versa | Line Up : Mike O'Brien [Vocals], Vincent Lyons [Lead Guitar], Ger Hennessy [Guitar],
Paul O'Mahony [Bass Guitar], Padraig Murphy [Drums] Active : 1980/1 - 1981 |
| Factor Fiction | Line Up : Mike O'Brien [Vocals], Vincent Lyons [Lead Guitar], Ger Hennessy [Guitar
& Keyboards], Paul O'Mahony [Bass Guitar & Vocals], Padraig Murphy
[Drums & Percussion] Active : 1981 - 1983 |
| Loko Parentis [Mark 1] | Line Up : Mike O'Brien [Vocals], Giordai O'Laoghaire [Guitar], Ricky Dineen [Guitar],
Paul O'Mahony [Bass Guitar], Active : 1981 - 1981 |
| Totally Unpredictable | Line Up : Vincent Lyons [Lead Guitar], Paul O'Mahony [Bass Guitar], Padraig Murphy
[Drums], Marie Creighton [Vocals] Active : 1986 - 1988 |
| Loko Parentis [Mark 2] | Line Up : Paul O'Mahony [Bass Guitar, Vocals & Guitar], Alan Markey [Bass Guitar
& Vocals], Tom McDonald [Lead & Rhythm Guitar], Jareth Tait [Drums] Active : 2007 - |
