Discussing his willingness to work with Jensen Ackles and Misha Collins in the future — and if there's a "Batman" villain he wants to play — Mark Sheppard said, "There are so many I would love to do ... We had a wonderful weekend [in] Vancouver for a 'Supernatural' convention." Jared Padalecki was sick, and Sheppard went in his place. "We had a meeting. We never had a wrap party for the end of 'Supernatural.' [It was] another opportunity to see everybody and come together," Sheppard explained.
While nothing is officially in the works, talks are certainly happening. "We talked about possibilities of doing stuff, and nothing pleases us more than making the 'Supernatural' family happy, genuinely — but without always having to be about that story. There's a lot of trusts and a lot of love between these actors and these writers and people," Sheppard continued. "We've worked together over many years, so why shouldn't we work together again? Why shouldn't we try? Why shouldn't we feed this wonderful machine of [the] worldwide 'Supernatural' family?"