This version of Cosmic Boy was a time paradox duplicate created by the Time Trapper, taken from the original Cosmic Boy shortly before the death of Ferro Lad. During the events of Zero Hour, to help preserve the timestream, he merged with his mainstream counterpart, perishing in the process.
- 36 Appearances of Rokk Krinn (SW6)
- 3 Images featuring Rokk Krinn (SW6)
- Quotations by or about Rokk Krinn (SW6)
- Character Gallery: Rokk Krinn (SW6)
Legion of Super-Heroes member