- Tony Hale as Forky
- Jeff Pidgeon as Mr. Spell
- Addison Andrews, Mika Crespo, and Imani Prior as Peas-in-a-Pod
- This marks the Peas-in-a-Pod's returning appearance in the Toy Story franchise, after having minor appearances and cameos since Toy Story 3.
- The music cue "Boo Leaves" from Monsters, Inc. plays at the end.
- This marks Mr. Spell's first appearance since Toy Story 2.
- It is unknown exactly how Mr. Spell ended up in Bonnie's room: either Andy's was donated to at least several places up to here, or Bonnie has a different one of the same model as Andy's
- During the last shot of Bonnie's bedroom, there is one object that signifies each episode of the show: A dollar bill Forky trips over in What is Money? (seen on the floor left of Bonnie's bed), the spoon Forky dances with in What is a Friend? (seen on Bonnie's table), a flashlight Mr. Pricklepants uses when he and Forky play charades in What is Art? (seen on the top of Bonnie's toy kitchen), the small Luxo ball Forky bounces onto Rex in What is Time? (seen on Bonnie's beanbag chair), the candy heart Forky taped to the front of his body in What is Love? (seen at the bottom right corner of Bonnie's bed leg), Trixie's computer in What is a Computer? (right behind the left of Bonnie's bed), the toy robot leading the conga line in What is a Leader? (sleeping in the corner in front of Bonnie's costume box), Rib Tickles' camera in What is a Pet? (seen on Bonnie's stool), and the cheese Buttercup gives Forky in What is Cheese? (seen in Bonnie's trash can).
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