Already a smash hit with the critics and faring just as well with the wider viewing public, the third solo entry into the Marvel Cinematic Universe's 'Thor' series, 'Thor: Ragnarok' is without a doubt one of the biggest successes the MCU has seen. The movie sees Chris Hemsworth returning in the titular lead role, alongside such stars as Tom Hiddleston as Loki and Mark Ruffalo as Bruce Banner, aka the Hulk.

Ryan Reynolds as The Merc with the Mouth, DeadpoolRyan Reynolds as The Merc with the Mouth, Deadpool

One person who may have been brought into the cast if it was up to director Taika Waititi however is Ryan Reynolds, who takes on the mouthy mercenary Deadpool in the MCU. Unfortunately, according to a tweet from the director, that wasn't made possible because of "laws n s**t".

Bringing Deadpool to 'Ragnarok' would certainly have been an interesting direction for the film to take, but ultimately we imagine it would have been a choice that saw the certification for the movie go way too high for what Marvel Studios would be aiming for. The anti-hero's own flick for example was given the highest 'R' rating in America, whilst being an 18 in the UK, and it's something we think will continue with the planned sequel, set for release next year.

Fortunately, it looks like 'Ragnarok' didn't need to rely on having another guest star to make a good impression. Currently sitting with a brilliant score of 95% on reviews aggregate website Rotten Tomatoes, it's "certified fresh" and one of the most acclaimed flicks the MCU has ever presented.

Colourful in its promotion, it took Thor and his friends on a journey like none he'd seen before, in a different direction to the one taken in the hero's first two solo adventures and one that's proven perfect for the franchise. We can't wait to see what's next for the MCU if this is the general path that their film entries will now be following.

More: Taika Waititi On Why He Won't Direct A 'Star Wars' Movie

'Thor: Ragnarok' is available to watch now in cinemas across the UK.