So suffice it to say that its not surprising to learn that Sam had an imaginary friend growing up.

Richard Speight has a funny, quirky, youd-never-see-on-another-television-show kind of episode.

Thats gonna be great, Padalecki tells EW.

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Credit: Bettina Strauss/The CW

Ackles adds: Just My Imagination is really fun.

I felt like I was on a sketch comedy show doing the show.

Specifically, the episode introduces Sully, Sams imaginary friend, who returns because hes in danger.

But it sounds like Sully might not be any safer with the Winchesters.

That is my favorite line this season so far, Ackles said.

So its really cool and I hope [Nate Torrence] comes back.

Supernaturalairs Wednesdays at 9 p.m.

ET on The CW.