Anna Cathcart
Katherine 'Kitty' Song Covey (10 eps)
Choi Min-yeong
Dae-heon Kim (10 eps)
Gia Kim
Yuri Han (10 eps)
Sang Heon Lee
Min Ho (10 eps)
Anthony Keyvan
Quincy 'Q' Shabazian (10 eps)
Peter Thurnwald
Alex (10 eps)
Jocelyn Shelfo
Madison (10 eps)
Yunjin Kim
Jina (9 eps)
Ryoo Han-bi
Eunice (9 eps)
Michael K. Lee
Professor Lee (8 eps)
Théo Augier
Florian (8 eps)
Sunny Oh
Mihee (8 eps)
Lee Seong-wook
Mr. Kim (5 eps)
Lee Hyeong-cheol
Mr. Han (4 eps)
Dong Hyo-hee
Financial Aid Counselor (4 eps)
Tobias J. Yang
Altan (4 eps)
Aaron Chan Meinero
Blake (3 eps)
Lee Jeong-han
Geon (3 eps)
John Corbett
Dan Covey (2 eps)
Han Chae-young
Dami (2 eps)
Go Do-yeon
Bora (2 eps)
Young Joo Ha
Ha-Jung (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)