Fans 'figure out' Macaulay Culkin role for Amazon Prime's hit series Fallout

Fans are speculating about the character Macaulay Culkin will portray after it was reported that he has been cast in a 'must watch' series.

Known for his roles in Home Alone, the star is said to have landed a significant role in the second season of Fallout, according to reports.

The Amazon Prime series, based on the popular video game franchise, has been hailed as one of the best and a 'must watch', with IGN naming it as one of the top video game to screen adaptations.

Ella Purnell stars as Lucy, a spirited vault dweller who ventures into the post-apocalyptic world to find her father.

She is joined by Walton Goggins as The Ghoul, a character so loved by fans that he was added to the recent game, Fallout 76, as a playable character.

The show debuted in Amazon Prime's top three most watched original shows and received 16 Emmy nominations, including Outstanding Drama Series.

With the announcement of Culkin's casting, viewers are eagerly anticipating which role he could be playing.

While Deadline suggests that he will play a 'crazy genius-type character', fans have already begun theorising on social media about what or who that could mean.

Some believe he could play a version of a character from the game New Vegas, such as Arcade Gannon, a scientist who can become a companion for the player, reports .

Some fans speculate that Macaulay Culkin could take on a role similar to Nick Valentine, the android detective from Fallout 4.

However, there are also more humorous fan theories about Culkin's potential character in the upcoming series, with one jesting: "Sources say that the rumours he will plays the last vault dweller of vault 89 are completely without merit."

"His character will not be defending his vault against surface raiders, who are trying to break in, by laying ingenious traps and hijinks to stop the raiders."

Another fan suggested, perhaps more seriously: "Please be a random camp/shelter builder who just has an insane camp the main characters stumble across....filled with traps of course."

Culkin, a household name for his iconic role in Home Alone, watched by families every Christmas, has kept busy with voice work in The Second Best Hospital in the Galaxy and a role in American Horror Story: Double Feature.

Fallout is streaming on Amazon Prime.