And even though these were supposedly opponents, Rex continued to simply help Circe when in dilemmas.   He have a tendency to attempted to convince her to become listed on Providence, however, she left rejecting his provide. Rex is conscious Van Kleiss was using the woman under control to manipulate him, but he nevertheless did actually provides thinking on her behalf. She displayed significantly more compassion towards your during the race than many other Package members.  Despite their leased goal, she shown guilt at times, suggesting one to she don’t constantly go along with using Rex.  Circe afterwards stop new Pack, no longer that have one interest in getting part of Van Kleiss’s competitive agreements. 
Afterwards, whenever Rex went along to the girl during the Hong kong along with his gang, Rex considered that she was in a relationship with Skwydd, and this some annoyed your. As he indeed considered going through the truth that they simply has been a couple of, Circe and you can Skywdd after mentioned that they certainly were simply “friends”.  Eventually, Rex and you may Circe mutual their first hug due to Circe losing by herself so you’re able to Providence for your.  After, whenever Circe was released from Providence, Rex and you may Circe accepted each other, happy is reunited. 
Just after getting discovered and rescued because of the your, Half a dozen can be regarded as Rex’s handler. Rex reveals a lot of affection and you will annoyance towards the Representative Half a dozen. He views Half dozen because the a kind of nanny, as it’s his work to view over Rex. Rex can be annoyed by Half dozen and his awesome rigid identity however, in reality cares significantly on which the guy thinks of him and you will wishes to reside doing his standards, often ultimately causing their efforts so you can fail. 
Immediately after Half a dozen had destroyed his thoughts of Caesar’s time/memories host, Rex however respected him for any reason, in the event Half a dozen is actually intentionally going to destroy him. Rex’s have confidence in him try what stopped Half dozen regarding continuing that have their methods first off. Then arranged that if he had been looked doing given that a person who Rex you can expect to trust this much he then should try to locate a method to getting that individual once again. Whenever wanting to fix their recollections, Half dozen is almost killed. Unfortuitously their memories did not getting restored, on account of Rex bringing quick safety measures and you may destroying the computer before it may manage more damage. However, Rex promised which he manage remain near to Half a dozen which help your repair his thoughts. 
Over the years, the two have started developing a further father/son thread. It was actually stated because of the Rex that he appears up to Half dozen while the a father figure.  At the one point, when Half dozen was put in good comatose state as a result of the result of a poor battle, the whole date, Rex try distraught, and you may frightened that Six perform actually perish. When finding out he got recovered, Rex is actually happy and embraced him. 
Bobo is Rex’s sidekick and best friend. They usually have identified one another and come best friends due to the fact earliest day they concerned Providence.  Bobo is snarky and you can unreliable; not, he’s going to would their better to cover Rex, unless of course their conformity is purchased because of bribery or threats.  He will convinces Rex for taking reckless action and you can comes with your. He has openly accepted that he’s a detrimental affect Rex.
Rex very preferred flirting which have Dr. Getaway , despite the fact she is far more than your. Even after the guy dropped getting Circe, the guy continued in order to flirt having Dr. Vacation in a partial-flirting method. To the introduction of a healed Beverly Escape, a generally a more youthful version of Dr. Vacation, Rex in the end had more their crush for her.