Sibling Rivalry - S1.E12

When the Space Knights are given shore leave, Tina, Maggie and Star go to the shopping mall. When they see Blade there, they call out to him but he doesn't respond to their greeting. Later on, they learn Blade wasn't at the mall. In fact he's been with Mac at the Command Center all day. The women are amazed, saying, "This guy could have been Blade's twin!" Blade immediately knows what this means -- his twin brother Saber, one of Darkon's most lethal warriors, has come looking for him. Shortly thereafter, the twins meet and Saber mocks Blade for being weak, for refusing to acknowledge the dark side of his Tekno-nature and rejecting the gift of unlimited power Darkon has offered them. The twin brothers fight, and Saber gains the upper hand just as Blade's thirty minute time limit is about to expire.