Voir Fantastic Four: World's Greatest Heroes, The Complete First Season - Episode 16

The Skrulls now have the technology to duplicate the abilities of the Fantastic Four (due to secret help from Ronan the Accuser). They change their Commander Kl'rt into the Super-Skrull. As part of their deal, Commander Kl'rt gives Johnny to Ronan the Accuser to take prisoner. Soon, he manages to escape. However, now the Fantastic Four have to battle Ronan the Accuser and the Super-Skrull.