assistant to producer: Ken Jeong / assistant: Ken Jeong (44 episodes, 2015-2017)
dialogue coach: on set / dialog coach / dialogue coach (44 episodes, 2015-2017)
production coordinator (44 episodes, 2015-2017)
Writers' Assistant (34 episodes, 2016-2017)
audience page (19 episodes, 2015-2016)
showrunner's assistant (18 episodes, 2016-2017)
audience switcher (10 episodes, 2015-2016)
showrunner's assistant (9 episodes, 2015)
assistant to executive producer/showrunner / writers' assistant (7 episodes, 2015-2016)
choreographer (4 episodes, 2015-2016)
stand-in (3 episodes, 2015)
Korean acting coach (3 episodes, 2016)
production assistant (2 episodes, 2016)
studio teacher (1 episode, 2015)
production coordinator (1 episode, 2015)
production assistant (1 episode, 2015)
production accountant (1 episode, 2015)
set production assistant (1 episode, 2015)
audience page (1 episode, 2017)
post production coordinator (unknown episodes)
craft service (unknown episodes)
production assistant (unknown episodes)
asst. choreographer (unknown episodes)
extras set coordinator (uncredited) (1 episode, 2015)