• by Danielle Oster , October 17, 2025

C4 Energy is launching a monster of a brand collaboration.

The Nutrabolt energy drink company is partnering with entertainment company Toho International on the release of a flavor called C4 Ultimate Energy Sour Blue Razzilla.

The limited-edition, zero sugar, sour blue raspberry flavor contains 300mg of caffeine per can.

The flavor is launching Nov. 3 for Godzilla Day, the annual celebration of the franchise timed to the release of the first film’s debut in Japan in 1954. The release will be available via C4 Energy’s website, Amazon, and retailers including HEB and Pilot/Flying J.

The new flavor will be promoted by a multiplatform campaign, including digital advertising; social media, including influencer marketing; and retail marketing activations. As part of the campaign, the brand will have an “immersive booth” experience at the 2025 Chicago National Association of Convenience Stores Show.

As part of the partnership with Toho, C4 will also have upcoming exclusive drops timed around the 2026 release of the sequel to “Godzilla Minus One,” and “Godzilla x Kong: Supernova,” slated for a March, 2027 release in the U.S.

Ahead of the Razzilla release, C4 is also introducing a C4 Performance Energy Cereal Killer flavor, inspired by fruity cereal flavors. Also a limited-edition release, the zero sugar release contains 200mg of caffeine, and launches Oct. 22 on the brand’s website and on Amazon.

The launch comes on the heels of the brand’s “We Are All Athletes” campaign, as well as parent company Nutrabolt expanding its investment in Bloom Nutrition.