Marvel Studios concept artist Rodney Fuentebella revealed unseen designs for the crucial time travel device used by the eponymous heroes of Avengers: Endgame.

"I did some ideas of a handheld time travel device for Avengers: Endgame," Fuentebella wrote on Instagram. "These were cool to design. I wanted to try a variety of different shapes and feel Stark made with a little help from his friends. Enjoy!"

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Fuentebella created two concept designs for the time travel device with each giving a different aesthetic and feel. The first design is sleek and slender with definite influence from Iron Man's trademark red and gold aesthetic. It looks like a high-tech taser with two prolog-like pieces lighting up blue along with the centerpiece. The second design, meanwhile appears fuller and rounded, resembling a beetle. More of Iron Man's color motif is incorporated into the device with the metal pieces glowing blue from the center outwards.

The fourth Avengers film recently received the Golden Tomato from film review site Rotten Tomatoes as well as a SAG Award for Outstanding Stunt Ensemble.

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Directed by Joe and Anthony Russo, Avengers: Endgame stars Robert Downey Jr. as Iron Man, Chris Evans as Captain America, Mark Ruffalo as Bruce Banner, Chris Hemsworth as Thor, Scarlett Johansson as Black Widow, Jeremy Renner as Hawkeye, Brie Larson as Captain Marvel, Paul Rudd as Ant-Man, Don Cheadle as War Machine, Karen Gillan as Nebula, Danai Gurira as Okoye and Bradley Cooper as Rocket, with Gwyneth Paltrow Pepper Potts, Jon Favreau as Happy Hogan, Benedict Wong as Wong, Tessa Thompson as Valkyrie and Josh Brolin as Thanos. The film is now available on Digital HD, Blu-ray and 4K UHD.