|These people are those around which the series revolves. They appear in all or most episodes.
||These are regular characters, but do not play as large a roll as their main character counterparts. They also appear less often.
||These characters appear every so often.
These people appear for one or two episodes and are usually redshirts . They are listed in order of appearance.
Characters Mentioned But Never SeenEdit
||1x01 - Pilot
||Ned Carver was a cattle rancher. He was infamous for calling the to Sheriff's office report that aliens had abducted some of his cattle. Usually he had miscounted his herd.
4x01 Founder's Day
|Albert Einstein was one of the founders of Eureka, and assisted in building the Einstein-Grant Bridge Device.