Tim Allen is making a list, checking it twice and his co-stars are revealing if he's naughty or nice. 

Allen is putting on the red suit once again in the new Disney+ show, "The Santa Clauses." The cast told Fox News Digital what it was like working with the man himself and how "surreal" it was seeing him in that iconic outfit.

"Tim Allen in that suit it’s as close as you get to the real Santa Claus, that’s what it feels like," explained Jason Winer, the show's director. "There’s this hush that comes over the set when he enters in the suit."

Also returning to the Santa Claus franchise is Elizabeth Mitchell, who stars as Carol, otherwise known as Mrs. Claus. Although it has been 16 years since the last movie was released, Mitchell said it was like no time had passed when they got on set.

The Santa Clauses still

Elizabeth Mitchell said she and Tim Allen picked things up as if no time had passed since they last worked together. (Disney/James Clark)

TIM ALLEN'S REAL-LIFE DAUGHTER STARS ALONGSIDE HIM IN 'THE SANTA CLAUSES'

"First of all, we love and respect each other, but he also is so funny, and he knows what’s going to make me laugh, because he worked with me when I was so much younger, and he also worked with me right after I had my son, and I was completely brain-dead. So he knows what can make me laugh, and he does it every time," she explained.

Austin Kane, who plays Allen's son in the show, recalled meeting him for the first time and said the connection between them was instant.

"The time I met him on set was insane because I’m walking on the set, he’s wearing his Santa face, but not the body," Kane said. "He just looks at me, and he goes, ‘hey son,’ and I completely mind farted cause like this is a guy that I have been watching since I was like five years old, and I just went, ‘what’s up pops,’ and we went right into it as if we have known each other for years."

In Kane's experience, Allen, as well as Mitchell, were very gracious about taking the younger actors "under their wings" and making "all the little ones on set" feel comfortable.

The other young stars echoed Kane's words with Rupali Redd, saying she had a blast working with Allen, and that he is "one of the funniest persons (she's) ever met." She told Fox News Digital that "seeing him in his costume was just unbelievable." Matilda Lawler agreed saying "seeing him on screen when I was younger, and then seeing him in person is surreal."

Tim Allen and Devin Bright on The Santa Clauses set

Devin Bright had fun working with Tim Allen on "The Santa Clauses," and said he learned a lot from seeing his passion for making everything just right. (Disney/James Clark)

Devin Bright also had fun working with and learning from Allen. "He is just really funny and one thing that I did appreciate, was he cared for the story," he explained. "If a scene was going on, he’d be like, ‘well why is this happening? What works here? Does this make sense?’ and so it was really cool to learn from that and have fun with him."

However, it wasn't just the kids who got a kick out of working with Allen. The adults on set also loved seeing him embody the role of Santa. Kal Penn, whose character interviews for the role of Santa when Scott Calvin decides to retire, said he would love to work with Allen again in the future. "I’ve been a Tim Allen fan…since I was a kid. He’s so funny and so smart, and I loved talking to him off-screen. I loved all of his, just the humor that he brings when things aren’t scripted is also amazing," Penn revealed.

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Show runner and executive producer, Jack Burditt worked with Allen before on "Last Man Standing," but said there was something different about working with him when he is playing Santa.

"That first time that he walked onto set as Santa Claus, was just like, ‘oh wow, this is amazing!’ The entire crew was just blown away. I think most of the crew have been fans of the movie too, so it was a real trip. When he’s Santa, it’s not working with Tim Allen anymore, you’re working with Santa Claus."

The consensus among the cast and crew was that everyone got along nicely, something that is not always guaranteed when working on a new show.

"We all really got along, and you don’t know if that’s going to happen until you get onto set, and from the minute we were all together, we were giggling, we were laughing," Mitchell explained. "The kids were incredibly professional, and as a result, we just got to play. Everybody got to play. We all knew our stuff and then we just went in and played, and it was a joy."

The cast of The Santa Clauses

Elizabeth Mitchell said everyone got along on set and "just got to play." (Disney/James Clark)

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"The Santa Clauses" premieres on Disney + on Nov. 16.