Neat little idea for Family Friend:
X gets a doggie. Specifically he comes across one of those rescueable wolfloids you find in X6. It was the last one in what was the most dangerous area and was really beat up when X found em. He's surprised the dog didn't contract the virus that was floating around at the time. It was rushed, but X did manage to patch up the poor pupper and brought it somewhere safe.
After that though, the dog would start following X around during his missions, always close enough to see but far enough that X couldn't reach. X noticed, but he thought that the dog would wander off on its own. That didn't end up happening and once he recognized it was the same wolfloid he saved, X found an open space to try and approach the dog. Though the dog approached and even gave X's hand a sniff, it scurried off before X could give it a good scritch.
It became a kind of routine after that. The dog follows X, X finds an open spot, the dog approaches, the two get a little more comfortable (usually through treats and pets), and then they go their separate ways. But it got to a point where the dog didn't leave like X expected and just followed him even when he went back to Maverick Hunter HQ. At that point X stopped calling the wolfloid "the dog" and gave it a proper name.
I think it'd be funny if X named his dog Chiptune, but only ever uses one half of the name when he's around other people and confuses everybody. So far I'm thinking Chip will be one of those chill dogs that loafs around for the most part. Very smart, very loyal. Absolutely excellent companion for X since this is around the time he leaves the Hunters.
One last little detail I'm gonna add is that Chip can be called to battle alongside X and hides in X's MeddiPack when not in use.