There are at least 2 artists using this name:

1)Polybius is a Colorado based Indie/Blues/Rock/Experimental/Metal/Folk/Country/Hip-hop/Post-Rock/Hardcore band consisting of ex-members of the band A Million O'Clock. Luke Hunter James-Erickson drums and provides backing vocals. Tom Wallingford plays bass, guitar, didgeridoo, turn-tables, backing vocals and occasionally lead vocals, along with rap-style vocals. Sean Prahinski plays lead guitar and provides the majority of the lead vocals. The members have various side projects. Luke's are Bread is Toast, The Sans, D0, Luke Hunter & The Luvu2's, and The Golden Stars. Tom's is Epoch. Sean's are Deprivance, Defeat The Purpose.

2)Polybius is an electronic music artist, known in the forums of Renoise for his great tracks. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.