Mika Amonsen is speaking out about his new role on the hit police drama Blue Bloods. He has taken over the part of Sean Reagan, the son of Danny Reagan played by Donnie Wahlberg. The character was previously portrayed by Andrew Terraciano for 14 seasons.
Amonsen discussed the unique challenges of joining a long-running series. He spoke candidly about the pressure he felt in a recent interview with Us Weekly.
Embracing the Legacy of a Beloved Character
Amonsen admitted to feeling significant pressure when he first got the part. He wanted to honor the work of the actor who came before him. “I definitely felt a ton of pressure at first,” he told the publication.

He was determined to respect Andrew Terraciano’s portrayal. This intention influenced some of his early creative choices for the character. He even considered specific visual aspects like hair styling to maintain continuity for fans.
The actor felt a deep responsibility to the show’s loyal audience. He aimed to keep Sean’s essence as close as possible to the character viewers already loved. This approach was his way of honoring the legacy built over more than a decade.
A Rapid Transition and Intensive Preparation
The entire process happened very quickly for the new cast member. He was thrust into the Blue Bloods universe with little time to prepare. “When I booked the show, it all happened really quickly,” Amonsen recalled.
He had roughly one week between booking the role and starting work. To get up to speed, he embarked on a binge-watching marathon of the series. He strategically focused on the most recent seasons to understand Sean’s contemporary arc.