Legion of Super-Heroes (1980 Series) #272

The Secret Origin of Blok! Wildfire and Dawnstar are testing four Legion Academy recruits to see which will join the Legion; As former enemy Blok recounts his origin, the team is called to recapture the escaped Starburst Raiders; Blok is admitted to the team for stopping the villains single-handedly. Who Are the Heroes? featuring Dial H for Hero. New student Chris King meets Vicki Grant at school who tells him that the house his parents bought is rumored to be haunted; They find two mysterious dials in the attic which enable them to turn into super-heroes.