Hasbro just sent us the official details for the new Transformers Scooby Doo Mysterious Prime & Automutt action figure set, inspired by the beloved Scooby-Doo franchise and its iconic characters.

The 6-inch-scale Mysterious Prime figure converts from robot to Mystery Machine-inspired van mode in 19 steps and includes 4 swappable heads based on Shaggy, Fred, Daphne, and Velma. Automutt converts between a Scooby-Doo-inspired dog and a box of Scooby Snacks in 6 steps. 

See the official product description and high-res images below for the full preview. Look for this set to arrive in September 2026 for a price of $57.99 USD. Pre-orders for the action figure set begin today at 1PM ET / 10AM PT on Hasbro Pulse and other participating retailers. Order while they last at the following sponsored links:

TRANSFORMERS SCOOBY DOO MYSTERIOUS PRIME & AUTOMUTT 

Release Date: September 2026

Retail Price: $57.99 USD

Experience the epic wackiness of Scooby-Doo x Transformers with the Mysterious Prime & Automutt collectible figure set! Mysterious Prime changes from 6-inch (15 cm)-scale robot to Mystery Machine-inspired van mode in 19 steps, and comes with 4 swappable heads to resemble a robot version of Shaggy, Fred, Daphne, or Velma. Automutt changes between Scooby Doo-inspired dog and a box of Scooby Snacks in 6 steps. This Transformers toy set comes with camera accessory and flashlight accessory that the robot can hold and 2 ascots that the robot can wear.

Look for more collaborative Transformers collectible toys (sold separately, subject to availability) featuring favorite properties and characters to create a lineup that is - More Than Meets the Eye. TRANSFORMERS and HASBRO and all related trademarks and logos are trademarks of Hasbro, Inc. SCOOBY-DOO and all related characters and elements (C) & (TM) Hanna-Barbera. WB SHIELD: (C) & (TM) WBEI. (s26)

SCOOBY DOO x TRANSFORMERS COLLABORATIVE ACTION FIGURE SET: Meet Mysterious Prime and Automutt, 2 Transformers figures inspired by everyone's favorite meddling kids

MYSTERIOUS PRIME CHANGES FROM VAN TO BOT: Convert from Mystery Machine-inspired van to 6-inch (15 cm)-scale robot in 19 steps

SWAPPABLE HEADS FOR MYSTERY, INC. CHARACTERS: Mysterious Prime can resemble a robot version of Fred, Shaggy, Velma, or Daphne

AUTOMUTT CHANGES FROM DOG TO SCOOBY SNACK BOX: Inspired by Scooby Doo himself! Change from robot Great Dane into a box of Scooby's favorite treat in just 6 steps

SCOOBY-THEMED ACCESSORIES: This Transformers figure set includes flashlight and camera accessories as well as orange and green ascots to represent Fred and Daphne's preferred adornment

COLLECTIBLE TRANSFORMERS GIFTS: Transformers action figures make a great Christmas, holiday, or birthday gift for boys and girls 8 and up or anyone who collects Transformers toys