They featured one Rex understood Black colored Knight since he was in fact younger. She did alongside his mothers during the Nanite Venture,  but owed manage his amnesia, he decided not to contemplate particularly occurrences. When Rex came across Black Knight again, since Providences the new chief, Rex quite doubted you to she try some thing close a good.
Once the she attempted to convince him from her an excellent aim, Rex left giving themselves an explanation to trust that she might’ve already been a bit sinister. They first started to the a good start just after she help Rex work at his own missions, however, Rex became confused and you may deceived when Providence used collars so you’re able to brainwash EVOs. Once Rex expressed his feelings regarding it, Black colored Knight asked Caesar to complete an equivalent so you can Rex. Once Rex bankrupt on the the latest manage, he made an effort to avoid. Black Knight did all-in this lady power to keep him captured. Eventually, he was protected by Agent Half dozen and you may Vacation, which turned into all of them up against Black Knight while the the newest Providence. 
Whether or not their past encounter failed to end very well, Black colored Knight constantly considering Rex various other opportunity to getting a member out-of Providence, and this consistently lead to Rex decreasing. Rex upcoming started initially to meddle in lots of out-of Black colored Knights objectives, ultimately causing of many lifetime out of EVOs and simple visitors to be protected. Sooner or later, Black colored amino support Knight turned sick of Rex’s meddling.
Rex had previously been Quarry’s greatest lieutenant. He voluntarily ended up selling their household members off to Quarry in return for his independence. Regretting that which you he performed, the guy gone back to competition Quarry so you can free their household members. Quarry lured him through providing their journal, but Rex refused the offer of the ruining they. 
Quarry later came back once released from the Violation under Van Kleiss’s acquisition, seeking to get payback for the Rex and you may attempting to sell the Molecular Destabilizer for the large bidder. not, Rex beaten him and you may welcome Infraction when deciding to take Quarry to Van Kleiss in return for Circe’s coverage. 
From the beginning, Hunter Cain and Rex got never obtained collectively. Rex himself, had as well as said that Huntsman Cain was one of his most readily useful enemies.  Cain’s untrue accusations and bias concepts toward EVOs caused animosity ranging from both. Rex’s hate turned sustained when Hunter Cain managed to determine civilians to get into Rex as a danger in place of a hero. In the event that go out are best, Cain assaulted Rex. Just after Rex outdone your, Rex regained their rightful visualize because the Providence’s magic gun.  Here to the after, Huntsman Cain and you will Rex encountered both many times. Cain keeps, into several times, experimented with destroying Rex but ultimately failed. Hunter Cain features endangered their members of the family and you can made an effort to exterminate them because they was indeed EVOs  . Even after being imprisoned, he was able to getting use which have Gatlocke and lots of allies. 
Regardless if the guy does not remember, John Scarecrow has already established issues with Rex since that time broadening upwards together with dated group inside the Hong kong. It had been indicated that given that he was an excellent shapeshifter, it provided Rex the concept to get voice activated nano-ink.  Ages later, John Scarecrow inserted Black Knight so you’re able to straight back at Rex and you will infiltrate New Bush. If you are truth be told there, John used Rex’s emotions, disguising himself because Circe and differing others. Just after Rex trapped him red-handed, Rex tried to strive your but had trouble performing they because the John leftover reminding Rex of your own horrible parts of their past. Ahead of he could wade any more and you will almost killed Rex, Vacation defeated him. 
It is not right until Rex see Caesar real intent and you may Rex put his new found powers so you’re able to reprogram the latest nanites and ultimately resigned. 
Besides the undeniable fact that Rex got a short-term smash on a break, Rex’s respect to possess Vacation considerably improved overtime. He thinks extremely high regarding the lady and actually glorifies the lady cleverness. She form a great deal to your and it has helped her into the the littlest so you can serious items; whether it is disobeying laws and regulations and you can enabling the girl access a few samples regarding EVOs not authorized by the White Knight,  or putting his life on the line to help rescue their cousin.  The woman is plus an individual who Rex can be correspond with when anything was bothering him. For-instance, she got demand for Circe when searching for the lady.  She also had a heart-to-heart having your when Rex found Noah are a good spy. 
Obviously Rex stills has in contact with him or her, because the Skwydd been able to improve your concerning class he had been working at.  After, Rex went along to him or her again and you will spotted its a beneficial improvements traditions their life and you may taking Circe because their new member. 
Rex after volunteered so you’re able to generate Violation towards Providence immediately after studying regarding the lady recently discover, improved results. Just after delivering their regarding Abysus, Rex learned a lot more about Infraction and you may began to get together again with her. After a huge battle anywhere between Van Kleiss and you may Providence, Breach stored Rex by the transporting Van Kleiss somewhere else in time. Rex upcoming found themselves caught up during the a period site which have Breach and you may returned a hug offered by the girl immediately after she thanked him to be her friend. Rex happened to be willing to die together with her.  Rex afterwards acknowledge that he and you can Violation had been nearest and dearest now.