If there is one criticism that has plagued movies within the Marvel Cinematic Universe, it’s that the villains in each individual movie (and the larger narrative) have not been at the level they could be. Antagonists like Red Skull, Alexander Pierce, and Ultron were good, yet too quickly defeated, while Whiplash, Yellowjacket, or Ronan could have been better given more screen time, and there are also big disappointments such as Malekith or the Mandarin. Each of these have left viewers wanting more from the foes, but perhaps the only exception to this rule is Loki.

Tom Hiddleston quickly became a fan-favorite actor not only for his charisma off-screen, but also for the way he used it to portray a complex, charming, and occasionally sympathetic villain. Loki has so far caused quite a bit of trouble, not only for his stepbrother Thor but for the Avengers as a whole, and he is not done just yet.

Hiddleston took to his Instagram page to reveal that he has once again suited up to play the god of mischief, but this time for his role in Thor: Ragnarok. This will mark his fourth appearance as the character, following appearances in ThorThe Avengers, and Thor: The Dark World.

He's back!

A photo posted by Tom Hiddleston (@twhiddleston) on

Hiddleston’s involvement in the Thor: Ragnarok should not come as a surprise as he was confirmed on the cast list earlier this year, but this is the first image we’ve seen of the actor on set. The photo itself does not reveal much of anything, but it is always nice to see a popular actor back in the MCU and excited to be there. Then again, he could just be excited to finish up his contract with Marvel Studios, barring an appearance in Avengers: Infinity War or its as-yet untitled sequel.

Loki’s role has so far been kept under wraps, outside of confirmation that he will be once again be a thorn in Thor’s side. After all, the last time we saw Loki he was posing as Odin on the throne of Asgard, and that ruse can surely only last for so long. It is unclear if Thor will discover this on his own, or if the impending attack of Hela (Cate Blanchett) will force Loki to show his true form. However, that could all be part of Loki’s masterplan should it be revealed that the two are working together.

Doctor Strange opens November 4, 2016, followed by Guardians of the Galaxy Vol. 2 – May 5, 2017; Spider-Man: Homecoming – July 7, 2017; Thor: Ragnarok – November 3, 2017; Black Panther – February 16, 2018; Avengers: Infinity War – May 4, 2018; Ant-Man and the Wasp – July 6, 2018; Captain Marvel – March 8, 2019; Untitled Avengers – May 3, 2019; and as-yet untitled Marvel movies on May 1, July 10 and November 6, 2020.

Source: Tom Hiddleston