Mariana Adams Foster is a fictional character from the television series The Fosters. She is portrayed as a smart and determined teenager who often faces challenges related to her identity and family dynamics. Mariana is known for her passion for technology and her involvement in various school activities. In the series, Mariana is the biological daughter of Lena Adams and Stef Foster, and she has a close relationship with her adoptive siblings, including Callie Jacob. Her character explores themes of love, friendship, and the complexities of growing up in a blended family.