Jinnytty

Yoo Yoonjin (유윤진; born July 28, 1992), better known as Jinnytty (Chinese: 企鵝妹, lit. 'Penguin Sister'), is a South Korean Twitch streamer.

Yoo is best known for her IRL livestreams on Twitch.

She graduated from University High School in 2010, then graduated from Yonsei University with a degree in Information and Interaction Design in South Korea.

She first started live streaming on Twitch at the end of June 2017.

During this period, she liked to play Hearthstone, and she also watched professional player games or teaching videos.

After becoming popular, Yoo catered to the audience with high interactivity, pure style, and increased her Taiwanese content.

She also traveled to Taiwan in March 2018 and held a fan meeting.

At the end of 2019, Yoo changed her target audience to European and American viewers and also traveled to the United States.

During the COVID-19 pandemic, she stayed at the home of the American streamer EsfandTV for several months, and they streamed together from time to time.

From 2020 to 2022, Yoo traveled to and streamed live in Korea, Europe and the United States.

On October 6, 2022, it was announced that Yoo had signed with esports organization TSM.