Hasbro’s Transformers x Monster Jam crossover has moved from teaser to full spec sheet. On July 16 the product description for the line’s flagship figure, the Leader Class Grave Digger Grim, went public, detailing the premium truck that anchors the collaboration.

Grave Digger Grim stands 9.25 inches (23.5 cm) in robot mode and converts between robot and a Grave Digger-inspired monster truck in 24 steps. The figure ships with a flag accessory, two exhaust pipes that combine into a scythe, and three blast effects.

The Leader Class release tops a lineup Hasbro first showed on June 5, when it revealed two deluxe-scale trucks: El Toro Loco Furioso and Megalodon Big Tooth. Both deluxe figures wear Autobot insignia on their shoulders and carry Monster Jam branding across the chest in robot mode.

The Monster Jam team-up continues a run of licensed Transformers crossovers in 2026. It follows the Transformers x Scooby-Doo Mysterious Prime and Automutt set, the Hot Wheels collaboration, and the Jem and the Holograms Blaster redeco headed to San Diego Comic-Con.

Update, August 5: preorders are live, and the price is not the one Hasbro quoted

Hasbro closed out the gaps at its San Diego Comic-Con Transformers panel on July 24, and preorders opened the following day. Grave Digger Grim is an Amazon exclusive, and the listing is live now.

Two numbers are worth separating. Hasbro’s own panel material quoted an approximate retail price of $49.99. The Amazon listing, which is the only place the figure can actually be ordered, is $57.99. Sixteen percent over the quoted figure is a meaningful gap on a Leader Class release, and since there is no competing retailer on an exclusive, there is no second price to shop against. Preorder Price Guarantee applies, so an order placed now bills at the lowest price Amazon lists before it ships.

The listing also puts a hard date on a release Hasbro had only described as Fall 2026: September 17, 2026. That is Transformers Day, the same date the 40th anniversary 4K theatrical run of The Transformers: The Movie opens with its new post-credits chapter. Hasbro is stacking the day.

One correction to the accessory count from the July product description: Amazon lists six accessories, not five. The two exhaust pipes that combine into the scythe, the flag, and three flame blast effects. The box contains the figure, six accessories and instructions.

Grave Digger Grim in monster truck mode, a green and black Grave Digger-liveried truck with pale grey flame graphics across the hood and flanks, magenta GRAVE DIGGER lettering on the side, red headlights, a yellow-tinted windscreen, a skull and crossbones flag on a mast at the rear, and black BKT tires on green rims

Grave Digger Grim in truck mode. Source: Hasbro.

The rest of the lineup now has prices too

The two deluxe converting figures revealed in June are confirmed at $24.99 each for Fall 2026 at participating retailers, with no exclusivity attached. El Toro Loco Furioso converts from a horned minotaur robot to truck mode in 7 steps; Megalodon Big Tooth converts in 6. Both are 9-inch figures rated ages 6 and up, a step down from Grave Digger Grim’s ages 8 and up.

Hasbro also brought Spin Master into the collaboration for two die-cast items that are not converting figures at all. The Monster Jam x Transformers Collector 4-Pack was quoted at $39.99 and lists at $43.99, and packs 1:64 scale die-cast trucks in Optimus Prime, Megatron, Bumblebee and Starscream decos. The Collector Optimus Prime is a 1:24 scale die-cast truck with working suspension and BKT rubber tires, quoted at $19.99 and listing at $24.99. Both opened for Amazon preorder on July 24 and are dated November 1, 2026. Every item in the collaboration that has reached a listing has done so above the price Hasbro quoted, which makes the pattern worth watching rather than a one-off on the Leader Class figure.

That gives the collaboration a spread from a $24.99 die-cast to a $57.99 Leader Class converter, which is a wider net than these crossovers usually cast. The converting figures are the ones aimed at this site’s readers; the die-cast pair is Monster Jam’s own collector shelf wearing Transformers deco.

Sources

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