Anna Cathcart
Katherine 'Kitty' Song Covey (18 eps)
Choi Min-yeong
Dae-heon Kim (18 eps)
Gia Kim
Yuri Han (18 eps)
Sang Heon Lee
Min Ho (18 eps)
Anthony Keyvan
Quincy 'Q' Shabazian (18 eps)
Peter Thurnwald
Alex (18 eps)
Ryu Han-bi
Eunice (17 eps)
Jocelyn Shelfo
Madison (16 eps)
Sunny Oh
Mihee (16 eps)
Regan Aliyah
Julianna (14 eps)
Michael K. Lee
Professor Lee (13 eps)
Yunjin Kim
Jina (9 eps)
Lee Sung-wook
Mr. Kim (9 eps)
Philippe Lee
Mr. Moon (8 eps)
Audrey Huynh
Stella (8 eps)
Théo Augier
Florian (8 eps)
Sasha Bhasin
Praveena Bhakti (7 eps)
Joshua Hyunho Lee
Jin Lee (6 eps)
Lee Hyeong-cheol
Mr. Han (4 eps)
Dong Hyo-hee
Financial Aid Counselor (4 eps)
Tobias J. Yang
Altan (4 eps)
Shin Hojo
Jiwon (4 eps)
Go Do-yeon
Bora (3 eps)
Aaron Chan Meinero
Blake (3 eps)
Lee Jeong-han
Geon (3 eps)
Jeong Hye-seon
Soon Ja (3 eps)
John Corbett
Dan Covey (2 eps)
Han Chae-young
Dami (2 eps)
Young Joo Ha
Ha-Jung (2 eps)
Ae Yon Han
Grandma (2 eps)
Sarayu Blue
Trina (1 eps)
Jenny Han
Check-In Lady (1 eps)
Ok Taec-yeon
Ocean Park (1 eps)
Park Chae-rin
Lulu (1 eps)
Paul Battle
Mr. Miller (1 eps)
Sascha Rothchild
Mrs. Miller (1 eps)
Alexander Morel
Jock (1 eps)
Jung Yun-ha
Receptionist (1 eps)
Noah Centineo
Peter Kavinsky (1 eps)
Han Seon Chang
Philip (1 eps)
Hyeong Joo Lee
Ha-jung (1 eps)
Peniel Shin
Joon Ho (1 eps)
Janel Parrish
Margot Song Covey (1 eps)
Rosy
Eun Ji (1 eps)
Yoo Ran KC
Clerk (1 eps)
Lewis Hooper
Teacher (Supporting Artist) (1 eps)
