Michael Cera's portrayal of Allan in the Barbie film is a comedic standout, with memorable moments like his dance moves and fence-climbing antics.

Cera's manager almost rejected the role due to concerns about relocating to London for filming.

Cera personally reached out to director Greta Gerwig via email and secured the role of Allan after a Zoom discussion.

Allan is inspired by a discontinued Mattel doll, Ken's closest companion, from the 1960s.

Greta Gerwig's Barbie film has broken records, crossing the $1 billion mark in global box office earnings within its first month of release.

The film is the highest-grossing movie directed by a female director in history.

The Barbie film has surpassed Christopher Nolan's "The Dark Knight" as Warner Bros' highest-earning domestic release, with over $537.5 million at the US box office.

The character Allan experienced a revival in the 1990s after being discontinued in the 1960s due to lackluster sales.

Michael Cera's decision to take on the role of Allan contributed to the film's success and recognition in the industry.