Supernatural Season 7 : Executive producer Sera Gamble tells TVGuide.com exclusively that Felicia Day will guest-star on the April 27 episode titled “The Girl With the Dungeons and Dragons Tattoo.” “We were so stoked that she agreed to do the episode because we’re all fan girls and boys here,” Gamble says.
“Felicia plays a girl named Charlie who is sort of a lowly tech working in one of Dick Roman’s companies,” says Gamble. “She’s an amateur computer hacker and unwittingly gets wrapped up in Sam and Dean’s problems. It’s a classic story of an everyday girl who does not want to be in a whistleblower position.”