- IU was born on May 16, 1993, in Seoul, South Korea. She debuted in 2008 as a singer-songwriter and actress under Loen Tree, subsidiary of 1theK.
- Having been raised in poverty herself, IU donates to many charities, most recently ~100000 USD to ChildFund Korea, an organization that supports children in needy families.
- In 2012, IU posted a thank you message on the international fan forum WeHeartIU. She whined on Twitter that no one read it, but it was because she caused an influx in traffic that brought down the site. See https://twitter.com/lily199iu/status/241092525111250945, https://twitter.com/lily199iu/status/241098518041882624, http://weheartiu.com/forums/threads/hi-im-%EC%95%84%EC%9D%B4%EC%9C%A0.7302/
