Beckett Mariner is a fictional character from the animated series Star Trek: Lower Decks. She serves as a junior officer aboard the USS Cerritos, a starship in the Star Trek universe. Mariner is known for her rebellious attitude and often challenges authority, which sets her apart from her fellow crew members. Despite her laid-back demeanor, Mariner is highly skilled and resourceful. She frequently finds herself in humorous situations while navigating the challenges of life in Starfleet. Her character adds a unique dynamic to the show, highlighting the experiences of lower-ranking officers in the Star Trek franchise.