Padalecki tweeted his displeasure that he first heard the news that his former co-star Jensen Ackles was developing Supernatural prequel series The Winchesters on their characters' parents from Ackles tweeting of a Deadline article. "Dude. Happy for you," Padalecki tweeted. "Wish I heard about this some way other than Twitter. I’m excited to watch, but bummed that Sam Winchester had no involvement whatsoever." When a Twitter user responded that "this has GOTTA be a bad joke," Padalecki insisted it was not. "This is the first I’ve heard about it. I'm gutted," he tweeted. Ackles has yet to publicly respond hours after Padalecki's tweet. As TVLine's Matt Webb Mitovich points out, Padalecki later tweeted and deleted a tweet directed at the spinoff's writer, former Supernatural producer Robbie Thompson. “Et tu brute? Wow. What a truly awful thing you’ve done,” Padalecki's tweet read, according to Mitovich. “#Bravo you coward.” Meanwhile, Supernatural creator Eric Kripke gave his blessing to the series, tweeting: "When @JensenAckles first told me this story, I loved it. He & @DanneelHarris & @rthompson1138 are the perfect people to make it. (The other perfect person is too busy Texas Rangering.) Thanks for carrying the torch, guys, go kick it in the a**. Proud of you."