Muscadine was 'born' in a destroyed AU, alone. Ink had noticed the sudden change of an AU and only one person in it, and got Dream and Swap to explore and only found a small, confused child.

They took him to their part of the void to get to know him, and quickly discovered that he didn't like Ink, due to the fact that the creator was being too hyper and close to him, and so in retaliation Muscadine bit his arm. That's why neither skeleton likes each other, but Ink forgot about him eventually, so Muscadine doesn't really care.

Dream on the other hand, knew that Muscadine didn't want to be quickly approached due to what had happened, and was trying his best to get to know him, but ultimately failed because he's constantly emitting positive emotions, and Muscadine was more uncomfortable than happy when he got near. (Thanks to these experiences, there is no effect on him when someone tries to use magic to manipulate or change his emotions.)

The only one he truly cared for was Swap, the only one that wasn't a god and was kind of related to him, and always treated him as an equal. Somehow, Swap understood that he shouldn't try too hard or be too hyper around this kid, and as said, he was the only one that actually got along with him.

As Muscadine grew older and had been with the Star Sanses for around three years, he started to wonder where he came from. Ink was out and probably forgot about him again, and Dream was visiting his own AU, the only one there was Swap, practically his only parent figure. He tried to sneak out, but Swap had caught him, but didn't do anything to stop him. His personality had become more parent-like throughout the years, and he simply told him: "Make sure you have fun, and don't forget to visit. I'll get lonely if you don't!"

Muscadine had run away from the Star Sanses, and went back to the destroyed AU he had appeared in. Throughout the years with the starry trio, he had learned how to use his own powers, and discovered he could teleport quite well, barely use some strange purple strings from his left eye, and many other powers. Hanging out with two gods only furthered his strength. Muscadine wandered around the AU for a long time, until he noticed something in the distance.

He approached it to discover it was another skeleton, just looking up through a hole in the AU into the black void.

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He's my favourite for the singular reason that he was the first kid to just appear from this, and my mum technically helped make him. (She suggested the split face, the two characters, and just the whole random shipkid thing that I'm doing right now.)

I also love his design, but then I started to make better designs and improve at art, so I'm thinking of redeg him already ahah.