|“||At one point I wanted to do an anthology show. Another time, I wanted to do a series about a reporter who works for a tabloid magazine, pretty much a rip-off of the original Kolchak: The Night Stalker. And then, finally, just through development with the studio, settled on this idea of telling these stories in the format of this Route 66: Great American Road Trip with these two brothers.||”|
— Eric Kripke
Eric Kripke (born April 24, 1974) is an American television writer, director, and producer. He is the creator of the Supernatural series.
Kripke currently serves as Executive Consultant, after serving as the show's primary showrunner for the first five seasons, of which he was noted for creating a uniquely detailed five-year plan.
After Season 5, Kripke stepped down as show runner and was replaced with Sera Gamble. He then went on to create a new series, Revolution. Kripke previously worked on the short-lived series Tarzan and has also written and co-produced the movie Boogeyman.
|“||We were reaching the end of this five-year story line [so] I thought the timing was right. I knew that we were closing this chapter and opening a new one. It felt like it was the right time to take a step back and focus on new projects, but still keep my grubby little mitts in the show. It was a lot about Sera and her enthusiasm and her ambition. I really think after five years of all of my crap, to have someone who has a fresh perspective and a fresh energy on these characters and this universe is healthy for the show. Supernatural has always been a show about reinvention. We try really hard not to do the same thing. I thought that Sera's increased involvement really helped guarantee that this season is going to feel a little different, a little fresher. She has a different sensibility.||”|
— Kripke on why he stepped down.
|“||I made a mistake very early in my career on Supernatural. I had a plan that ended the show after five years. After five years, Bob, Sera Gamble and I had the really difficult task of rebooting the show off the story line that I had basically been wrapping up in season 5. I think we really learned our lesson from that point forward. We created a more durable mythology that would end if we needed to end and would keep going if we wanted to keep going. I know Jared and Jensen are on board and doing great. I think our feeling is that we're happy to keep going as long as the network will have us. I think we're designed to really keep going and keep exploring.||”|
— Kripke on the Future of Supernatural.
|“||I do fantasize that it would be great to at least come in and be a co-writer of the finale, whenever that would be, But obviously that depends on what executive producer Bob Singer wants, what co-showrunner Andrew Dabb wants and what I'm doing at the time. But yes, the idea of it would be cool, if possible.||”|
— Kripke on returning for the finale.
- "Wendigo" (with Ron Milbauer and Terri Hughes Burton)
- "Bloody Mary" (with Ron Milbauer and Terri Hughes Burton)
- "Devil's Trap"
- "Sympathy for the Devil"
- "The Real Ghostbusters" (with Nancy Weiner)
- "Swan Song" (with Eric 'Giz' Gewirtz)
- Originally Kripke never intended for angels (excluding Lucifer) to appear on the series. "[My initial storyline] always involved Sam and Dean fighting demons and climbing up that ladder and eventually fighting Lucifer. I hadn't really considered angels. People would pitch me angel episodes and I would say no to them. In between seasons 3 and 4 we were all talking about it and I sort of realized we were missing another side of a coin and, hence, we introduced Cas in the season 4 opener. That idea of introducing angels – which became such a huge part of the show – was not initially part of the plan." 
- Eric Kripke was among many of the cast and crew members who appeared as characters in the Season 6 episode "The French Mistake".
- Eric Kripke later hired Misha Collins to play "Elliot Ness" on timeless, a series he co-created with Shawn Ryan.