The Legion of Super-Heroes (1980-) #266

Bouncing Boy and Duo Lass accidentally free Kantuu from his centuries-old prison, and they and Element Lad and Colossal Boy Take Kantuu on in a battle that comes to a cliffhanger climax.

Written By:
Gerry Conway
Jimmy Janes
Frank Chiaramonte
Cover By:
Dick Giordano