Guardians of the Galaxy Vol. 2 will mark the return of our favorite intergalactic Marvel rogues Peter Quill (Chris Pratt), Gamora (Zoe Saldana), Rocket Raccoon (Bradley Cooper), Groot (Vin Diesel), and Drax the Destroyer (Dave Bautista). However, writer/director James Gunn intends to add more Guardians to the roster - and it's only just been reported that Pom Klementieff is one such key new cast addition for the sequel.

Klementieff's specific role in Guardians of the Galaxy Vol. 2 was kept under-wraps when the initial reports of her involvement dropped online. Unsurprisingly, though, it hasn't taken long for noteworthy rumors about which Marvel Comics character she will play in the film to surface.

Deadline is reporting that Pom Klementieff will in fact costar in Guardians of the Galaxy Vol. 2 as Mantis, the half-German, half-Vietnamese psychic with martial arts skills and a history with the Kree race. The character has ties to supervillain Thanos (played by Josh Brolin in the cinematic universe) so it makes sense that Mantis might appear in the film.

Mantis first appeared in Issue #112 of the Avengers comic book series in 1973. She has spent more time with the Avengers since then, though in 2007 Mantis became involved with the Guardians of the Galaxy as a reluctant member of the team. She, like protagonist Peter Quill, has daddy issues - and seeing as that Gunn has said that the Guardians film sequel will focus heavily on paternal relationships, that improves the odds that Klementieff is playing Mantis. It helps that Klementieff bears a remarkable resemblance to the character, too (her alien qualities aside).

Here's our own Rob Keyes' explanation for why Mantis would make sense for the Guardians of the Galaxy sequel:

A telepath and a master martial artist who can locate physical weak points on opponents, Mantis takes on a special role on Peter Quill’s band of antiheroes and is even part of Quill’s shady plan to bring the team together – by using Mantis’ abilities to forcefully motivate them to enlist in the Guardians team. Did we mention she can even partially see the future? That might come in handy when the Marvel Cinematic Universe begins exploring time-travel, an important plot device in the Guardians of the Galaxy comics.

Time will tell if Klementieff is playing Mantis or not, but for now this rumor (arguably) is fairly believable. Is Mantis the perfect role for Klementieff, or would you prefer to see her in another role - such as Moondragon (Drax's daughter)?

NEXT: Mathew McConaughey Passed on the Guardians of the Galaxy 2 Villain Role

Guardians of the Galaxy Vol. 2 is directed by James Gunn, and features a returning cast of Chris Pratt, Dave Bautista, Zoe Saldana, Michael Rooker, Sean Gunn, Benicio del Toro, and the voices of Bradley Cooper and Vin Diesel.

Captain America: Civil War will release on May 6, 2016, followed by Doctor Strange – November 4, 2016; Guardians of the Galaxy Vol. 2 – May 5, 2017; Spider-Man – July 28, 2017; Thor: Ragnarok – November 3, 2017; Black Panther – February 16, 2018; The Avengers: Infinity War Part 1 – May 4, 2018; Ant-Man and the Wasp – July 6, 2018; Captain Marvel – March 8, 2019; The Avengers: Infinity War Part 2 – May 3, 2019; Inhumans – July 12, 2019; and as-yet untitled Marvel movies on May 1, July 10 and November 6, 2020.

Source: Deadline