Mary Chieffo (she/her) is a queer actor/producer known internationally as the Klingon Commander turned Chancellor L’Rell on the Paramount+ series Star Trek: Discovery, returning as her iconic character for the highly popular Star Trek Online. Chieffo received her BFA from Juilliard in 2015, along with the prestigious Elizabeth Smith Voice and Speech Prize and the Saint-Denis Prize for “Outstanding Achievement and Leadership in Drama.” When she wasn’t covered in prosthetics and speaking Klingon, Mary produced, wrote, and starred as Iago in Operation Othello – a feminist, gender, and color-conscious VR adaptation of Shakespeare’s Othello alongside Viola Davis and Julius Tennon’s JuVee Productions in the spring of 2018 (Official Cannes XR and Raindance XR Selection). She has since developed her female interpretation of the notorious villain for Iago: The Green-Eyed Monster, a Musical AR Experience co-created with Josh Nelson Youssef in collaboration with JuVee and Verizon, premiering at Tribeca Film Festival in June 2022 (Tribeca X Finalist). Recent acting credits include guest star roles on NCIS, Girls5eva, and Bespoke Plays’ staged readings of Madi Goff’s Lady Face and Systems in Los Angeles. Mary stars opposite Madi in the short film Every Morning, a queer sci-fi love story, also written by Goff. Chieffo served as executive producer on the film in partnership with Dr. Erin Macdonald’s LGTBQ+ owned Spacetime Productions.