Metang, Bronzor, Mantine, Skuntank. Careful Golbat(Seen some)
Skuntank being an excellent check with access to pursuit/sucker. I don't view drapion as a check to it and does a bad job as it. Drapion spdef is bad and won't survive leaf storm twice. Roserade is unhealthy in NU and does force people to run the same thing as Tawla said, Bronzor (if they wanted to), I don't see it as ban worthy like Rhyperior.