Arthur as a person has gone through a lot of changes, as he got older he got more mature and his hot headed attitude cooled down, when he was forced into leadership however at a young age he did his best even if not all of his choices were the best. Arthur's choices caused a lot of strain on his relationships with his brothers, particularly Falspar, but when the GSA reunited after NME's defeat Arthur was finally given a chance to make up for his actions and restore his bonds, over all growing tremendously as he learned and admitted that he thought he had more control then he actually did and had tried to tackle everything on his own. Nowadays he knows that there is no weakness or shame in having support. 

 A few years after settling on Popstar Dragato detected a very faint and very old distress signal coming from a planet that had seemingly just appeared out of nowhere on the far edges of the Gamble Galaxy, while they didn't expect to find anyone alive and the mission had been merely to see what was going on, they found a very odd puffball sealed in a cryogenic sleep pod. Arthur made the call to free her and they took her back to Popstar after confirming there was no other survivors. The strange puff woke up a few days later and was unable to speak common, and much to Arthur's dismay and utter embarrassment she decided he was going to be the one to experience her species ability, which is if they kiss someone they can learn their language (this ability is dubbed as sharing tongues). This mysterious puff explained how she couldn't remember a thing, and Dragato confirmed that having spent a very extended period of time in sleep, it was very likely it had caused her to experience amnesia. Arthur offered her a name, which was Gwenevere after the wife of the very hero he was named after, and Gwen accepted to be called such. He helped her adjust to life on Popstar and taught her how to read, write, and later how to handle a sword. 

Gwen helped Arthur through thick and thin as he struggled to keep the GSA together and held his paw through difficult choices. After awhile Arthur came to admit that he had feelings for her, and the two eventually became an official couple. Fast forwards by years, they later decided to have children and had two sons together which Arthur named Loholt and Mordred. The two brothers both being part of the next generation of starwarriors.