A1pha-1.2

ORIGN

He was created after Doctor Robotnik and Stone got their hands on both notes from and a lot of data from project Shadow. They swiftly realised this would be of great use to them, to have a Mobian fully on their side. Knuckles was incredibly helpful, until he betrayed them and with no other source of Mobians or garuntee that they wouldn't betray them, making their own was the best bet.
With Azul only being their second attempt at this that fully developed, and the only one who actually surived; he has a lot of genetic hick-ups. Due to this, he's needed a lot of further experiments to keep him stable and occasionally to provide improvements in his skills and use. Stone is far gentler with this process, talking Azul through what he's going to do first, the Doctor is less violent but tends to be heavy handed and not explain what he's doing to them.

Originally Azul was never meant to be named, kept simply as A1pha-1.2, but Stone became too fond of the younger creature. He used the excuse at first, that it was quicker to say then the full code name, but even Ivo realised it was more out of fondness then ease. He wasn't going to argue with his partner though, and did agree, Azul is faster to say anyway.
This has left Azul feeling very indebted to the two humans, they created him and have willingly kept him around. He really wants to make them proud and prove he was worth all of the time and resources that it took to make and continue to improve him.

Power Discovery

At first they thought they had failed, A1pha-1.2 had no super speed, seemingly not even slightly faster then the norm. It did become clear eventually, that they had some sort of eletrical power, and that he could be used to power their machines for the short term, or boost charging capabilities. Though, it was by complete accident that they discovered the main powers that Azul has.
He had been left alone with a single Botnik to keep an eye on him, while the two humans left the lab to go on a supply run. It was rare that both would leave him, let alone with only one Botnik to take care of him. They felt so proud about having been left like this and trusted, and wanted to do them so proud. However, curiosity got the better of them.
So, it went exploring around the lab, pokoing and prodding. Durring this process, it accidently knocked into one of the machines and something fell, he panicked and tried to reach out and grab it, but couldn't quite reach. However, it was shocked to realise that it didn't actually crash to the floor but had stopped moving mid-air around the same level of where his fingers were.

His powers eventually came out, he had hidden them out of embarressment due to how he found out about them, not really thinking about lying. The Dr soon pushed him to work out exactly what they could do and it was at this point they discovered it aws a combination of metal manipulation and technomancy. Explained probably due to the addition of metal durring his development process from the gaps that were left.
Though they were highly discouraged from the latter, so he didn't end up messing up any of their machines. They try to continue to hone and practice their powers, but it's hard to do when they don't want to get under their guardian's feet or damage anything from the lab. Especially as they can't be seen outside of the lab, in fear of it either alerting the government or it getting back to Sonic and his family, a surprise isn't if it's been found out after all.

RAPHAEL

Azul wasn't home alone this time, Stone was sleeping in the house and the Doctor had snuck off to get some supplies. He isn't sure as to why the others didn't go together but he must admit he liked the sleeping human body, it brought comfort even if he wasn't awake to pay attention to it.
It's why he went out to sit in the back garden and he fell alseep napping in the warm and slightly too long grass, awoken in fright at the older and taller Mobian looming over him. The other tried to comfort him, reassure that it was just curious over the strange biometric readings it was getting, but not to worry he's not the Mobian he's been sent after. All this did was make Azul let out an anxious and scared shriek and Stone came running, worry the child even more because he's done everything they shouldn't.
He's not quite sure how this ended up with the other Mobian moving in with them. The shrug and statement that he wasn't being paid enough to track the other Mobian over something interesting - didn't really help. But he now seems to live with them and is more then content about it, Azul doesn't mind, it's another person who calls him Azul, laughing at the humans at the fact his actual name is A1pha-1.2.

Azul does worry that Raphael will leave them, his morals do seem to align with their creator's but he comes from another planet and travelled the universe and Azul knows if he had that at his fingertips, he wouldn't give it up. He'll miss him though, if he choses to go and part of him thinks it would want to go with him, but then he doesn't want to leave his human behind.
Thinking of the future just makes his head hurt and the wish that nothing ever has to change solidifies in their mind.