Arnold Schwarzenegger will reportedly have a small role in 'Wonder Woman'.

Arnold Schwarzenegger

Arnold Schwarzenegger

The 69-year-old 'Terminator' star has sent the rumour mill into overdrive after eagle-eyed fans spotted something which could link him to DC Comics upcoming 'Wonder Woman' film which is set to be released in June.

Although filming wrapped up last month, according to Batman News, Schwarzenegger is thought to have been lined up for a small voice role - possibly for a CGI version of the villain Ares.

The rumour started after fans observed Schwarzenegger was followed on Twitter recently by 'Wonder Woman' director Penny Jenkins and DC Entertainment President Geoff Johns.

Notably the interaction draws similarities to John Cleese's social media, after the 'Monty Python' star followed Zack Snyder and Ben Affleck in late 2016 which sparked speculation that he would appear in 'Justice League' - something which was later proven.

If the Schwarzenegger rumours are true, it would see the actor and former Governor of California return to the DC universe for the first time since 1997 - when he last starred as supervillain Mr. Freeze in the derided 'Batman & Robin' movie which also starred George Clooney as The Caped Crusader and Chris O'Donnell as his sidekick Robin.

Gal Gadot reprises her role as the titular heroine in the film, while Chris Pine, Robin Wright and David Thewlis.