Park Hae Lin is a South Korean former trainee. She graduated from Seoul Performing Arts High School and is enrolled in the Film Arts program at Sejong University. She spent several years as a trainee at JYP Entertainment, MNH Entertainment and Play M Entertainment, even entering the survival show "MIXNINE" as a contestant without much success. In October 2018, she was announced as a candidate for the girl group WEEEKLY, but she decided to leave the company before the final selection was made. In February 2020, she appeared in an episode of "I Can See Your Voice 7", where she mentioned no longer being interested in becoming an idol.