Lifeline’s companion drone in Apex Legends is called D.O.C.
D.O.C. stands for Drone of Compassion and is the mechanical partner of Ajay Che, the combat medic known as Lifeline. The drone is central to her support-focused kit rather than being a purely cosmetic companion. It can provide healing assistance to nearby allies and has also been used to help revive downed teammates.
Lifeline was one of the eight Legends available when Apex Legends launched in February 2019. Her abilities have changed across updates, but D.O.C. has remained the recognizable technology at the heart of her medical role. Later versions of Lifeline’s kit also gave the drone additional functions, including movement and protective support.
Players often confuse D.O.C. with other Legend companions. N.E.W.T. belongs to Horizon, Sheila is Rampart’s mounted minigun, and Hack is Crypto’s surveillance drone. Those names refer to different Legends and abilities, making D.O.C. the only canonical answer for Lifeline’s companion drone.