On the latest episode of SBS music drama "I Am Legend", Super Junior's Heechul made a surprise guest appearance! In the September 20th episode, the girls of Comeback Madonna Band are at a broadcasting station to go on a radio program called Power FM. While being a nosy Nelly and snooping around, the girls run into Heechul. Despite her friends saying other wise, Hwa Ja (Hong Ji Min) goes into super fan girl mode and approaches Heechul asking for not one but two autographs. During this interaction, he realizes who the women are and says, "Wait... you're Comeback Madonna, right? I'm totally a fan! Please, if you have the time, come onto our radio show Young Street." This surprise cameo appearance was a definite treat for fans of the show and E.L.F.s alike. Check out the clip below!