Once a notorious duel player from Ireland. Started playing QuakeWorld at Trinity College in Dublin, Ireland in 1997 when he had no internet at home. Played on a modem connection in 1998 and ISDN starting 1999 and became one of the best dm4 players in Europe in the coming years, despite having to play with a ping of around 70. Koopa started going inactive in late 2002 to finish university, but nevertheless flew to Sweden to attend QHLAN 5 January 3rd-6th, 2003.
- Real name: Sam
- Date of birth: January , 1980
- Also known as: ma-skari, commandoau
- Nationality: Irish
- First spawned: 1997
- Colors: 1 2
- Map: dm4