They just vanish, much like Breach just an episode earlier.Van Kleiss and Breach both make a trimphant return in "What Lies Beneath". As of End Game: Part 1, Black Knight appears to have gained all of Rex's powers...just eviler.special nanites which can bestow the power over things like matter, antimatter and the likeBlack Knight who intends to acquire their power for herselfthe meta-nanites were programmed to work only for Rex, so Black Knight's or the Consortium's efforts to gain their full power were actually futile from the start Turns out he did, but he couldn't complete the last step because 1: he wasn't smart enough, and 2: It wasn't cost-effective. She, again, felt angry at those directly responsible and uncertain of what to do next. The series premiered in the United States on April 23, 2010 on Cartoon Network. He is capable of creating machines protruding from his body using machines that are capable of transmogrifying any form of matter called Nanites. Rylander claims that Rex had an accident and an alternate nanite strain (not the worldwide unstable kind) was used to save himGatlocke, Valve, Hunter Cain, and No-Face team up to kill Rex. Rex manages to restore her physical form and remove the machine.which are centered around Rylander's control naniteThen there's Kiev, Ukraine. When the event happened, the unlucky bastards living there were hit with the single largest concentration of Nanites (because Earth's magnetic field funneled a huge amount to it). Rex tried to talk to Circe but instead of a talk he received a blow to the back of his head. Later, Rex helped Circe defeat a sea monster that she had summoned using her sonic cry. Her sonic abilities are quite destructive, enabling Circe to easily shatter and break through concrete, rock, stone, wood, and metal. Humored by this, Circe and the gang stated that she and Skwydd were just good friends. However, they were all interrupted by Circe does not seem to like Biowulf, since he sees her as nothing more than a disposable underling. Circe later decided that her true loyalties lie with Rex, not Van Kleiss. After Rex left, the gang began walking home as Skwydd tried to ask Circe out on a date, which she tried to get out of by saying that she and Cricket were going to be doing their hair and nails that weekend.After Providence took a turn and began taking over Hong Kong's EVOs, Circe sat hooded in an alley way before she was approached by a While Circe accompanied Rex in the tunnels, she mentioned that EVOs sent down here in the past never seemed to return. He mentions explicitly that he has had much more practice with his Nanites and kicks some ass. They cured him, but they also inadvertently caused a chain reaction called The Event.

After Rex was injured in a battle with NoFace, Circe begged Van Kleiss to stop the fight. While this doesn't kill Rylander, the effect is the same. It is also revealed that her supersonic abilities can disrupt the mind-control collars offensives, and that using her abilities on so many E.V.O.s at once is tirring. Take your favorite fandoms with you and never miss a beat. Hundreds of years passed every time he used it (for a total of about 4000 years), and he was aware during every second of it.The E.V.O threat may be over, but the world still needs a hero.Rex in regards to his recently-discovered brother. When Circe told Breach not to attack Rex, Breach stopped immediately and gave Circe and Rex a chance to talk to each other.Later, when Breach feared that Van Kleiss would learn of her failure, she kidnapped Circe through a portal and took her to her own private pocket dimension. He ends up blowing that last part thanks to a stress-induced Cesar: "The day everything changed, we never imagined what would happen when we released the nanites. However, he eventually begins to show more discretion and consideration.