On this version of the costume, the four circles on the chest were actually discs that he could magnetically manipulate and use as weapons. The "Threeboot" version is a similar pattern, with blue as the primary color and black circles instead of white. In other media Television Cosmic Boy appears in the Superman: The Animated Series episode "New Kids in Town", voiced by Chad Lowe. He appears in Superman's past along with Saturn Girl and Chameleon. Cosmic Boy makes a non-speaking appearance in the Justice League Unlimited episode "Far From Home". Cosmic Boy is a recurring member of the animated series Legion of Super Heroes, voiced by Wil Wheaton. It reveals that he was the original leader of the Legion. Cosmic Boy appears that he has some romantic feelings for Saturn Girl in the season 1 episode "Chain of Command", wanting her to stay with him and Brainiac 5 where she would be safe. He loses an election for leadership position to Bouncing Boy, but seems to have regained his position at the beginning of season 2. Cosmic Boy, along with Saturn Girl and Lightning Lad, made his live-action debut in the eleventh episode of the eighth season of the CW series Smallville, portrayed by actor Ryan Kennedy. In the episode, Rokk is seen as the silent leader type. The most determined of the group, Rokk comes the closest to killing Chloe Sullivan, only to be stopped by Clark Kent, who informs Rokk that any Legion inspired by him should never resort to murder. When the group does defeat Brainiac by extracting him from Chloe - Rokk playing a crucial role as he magnetically extracts the particles of Brainiac from her body - Rokk changes the Legion rules accordingly. Just before he leaves, Rokk warns Clark of the days ahead, telling him to be careful. Though mainly referred to as Rokk, Lightning Lad calls him "Cos" at one point in the episode. He later returns in the season finale to give Clark a new Legion ring after his was destroyed in "Infamous" and warns him that nothing can stop Doomsday from killing him. He gives Clark the ring and tells him to send Doomsday to the future, as the Legion is prepared to fight him there. Film Cosmic Boy (along with Saturn Girl and Lightning Lad) appears in Lego DC Comics Super Heroes: Justice League – Cosmic Clash, voiced by