The biggest science fiction convention ever held in Sacramento is underway this weekend at the Sacramento Convention Center.

Comic Con 2014 kicked off with a ribbon cutting at 5:00 p.m. Friday at the entrance to the Sacramento Convention Center. The big names include Normal Reedus of “The Walking Dead”, William Shatner of “Star Trek” and Chris Hemsworth of “Thor”.

Organizers would not say how many people were expected, but confirmed the event could attract between 10,000 and 20,000 over the weekend. 

Comic Con 2014