[volume & issue needed] In the season finale "The Storm", the character is first heard as a voice on the radio asking if anybody is out there.
Rosita later finds Eugene rigging up defenses and encourages him to not give up on Stephanie, challenging him to kiss her, knowing his long infatuation with her.
They come up with a plan to gain access to the radios secretly, but shortly after making contact with Rosita, they are cut off and arrested.
In the episode "Promises Broken", Eugene, Ezekiel, and Princess clear walkers out of abandoned buildings with Stephanie as punishment for using the radio without authorization.
The two argue as Stephanie kills another approaching walker, and the argument escalates when Eugene punches Sebastian for his lack of gratitude.
Eugene becomes obsessed with finding Stephanie and breaks into a man's house looking for evidence but fails and Princess insists that she must have broken up with and abandoned him.
As Sebastian gives a speech on Founder's Day, Max and Eugene play the tape, causing the crowd to turn on him.
In the aftermath, a disgusted Max rejects her brother's attempts to protect her, but Eugene confesses and takes sole responsibility.
Trying to get a wounded Judith to the hospital for treatment, Max joins Eugene and their friends in fighting off the walkers to help buy Daryl time.
Margot Bingham was cast as Stephanie, a survivor from an unknown location who communicates with Eugene over the radio for the 10th season, with her name revealed in the episode "Morning Star".
"[8] In reviewing the episode "Promises Broken", Ron Hogan for Den of Geek notes that Stephanie appears to be an "inexperienced fighter".