Who's heard of them?
It's a rap group as big or bigger than Wu-Tang but it consists of all high school kids. They basically recorded a ton of shit on their computers and put it up on their website, and now they're relatively mainstream.
They're weird as shit. I'm not sure if I like them, but I think I do. It's definitely different.
This is Tyler, The Creator, who is to OFWGKTA as RZA is to Wu-Tang. The "leader" and producer.