Zunzun didn't arrive to Twoarth in the way that a lot of Gelgelans do, he's not royal and doesn't have the magical background to become a Royal Guard mage or whatever up in the castle. But he did come here on his own power, after doing a little research into 'where did Queen Sean actually just vanish to'. When the Queen and her company of kids and dragons passed through the town where he and his twin brother Ezzem lived, their mother actively hid her children away. She didn't want them 'being corrupted' by the Queen's influence.
And while Ezzem bought it, Zunzun absolutely knew that she was trying to keep her demonic dalliances secret. He wasn't sure why - plenty of Gelgelans were 'half-whatever', be it human, elfin, dwarf, or demon. Demon summoning wasn't illegal. Dangerous, yes, of course. But Zunzun knew better than to openly question their mother's decision. Instead he waited until the Queen had passed, and his mother was busy transcribing some text or other, and went out sniffing around where the entourage had been.
He noted how distinctly 'good' the aura was here, even though there was an overtone of 'necromantic' energy too. And since their mother had forbidden them from discussing this at home, he hardly knew what all that might mean. The Queen was in fact a necromancer, and probably had dispelled demons like his father in her liberation of the Gelgelan race several hundred years before.
But she was 'good'. Definitely. And... he cast his gaze back at the stone tower where he and his family resided... He knew that even a Gelgelan might succomb to evil if they were exposed to it enough. He was young, not yet a teenager, when he first teleported away from his home. He never went back.
He spotted places that the dragons and their riders had landed, using magical senses that he didn't really understand other people lacked. He would learn, in time, that his gifts came with a cost. He saw his father once - well, he knew that the demon had been around his tower home when he and his brother were born, but after that, only the one time when he accidentally drifted into a magical daydream.
While his teleportation isn't exactly 'genrehopping', he's had sit-down conversations much later with the few Carramba High instructors who teach it, about why he can sometimes move between dimensions in addition to just hopping across the countryside. Only because some of those kids riding dragons behind the Queen then visited Twoarth, did he wind up there at all, he seemed to 'latch on' to a trail to follow it!
But once he got here to Crescent City, he knew this was the right place to settle himself down a bit. He got in contact with the administration at Carramba, and even though he was a bit on the young side (still only around 12 at that time) he arranged for localized tutoring and a stipend and home thanks to grants from Alabaster. Now, at 16 or so, he's integrated firmly into the furry-magic groups in the area, and has become a naturalized citizen of Twoarth.
Zunzun will talk about his troubled past, he feels that it's good to get things off his chest. But he also won't burden others with those troubles - but if you cross him, don't expect that Demonic Reorientation class to help much... Because he can definitely go full raging demon on an enemy if he's provoked enough. Let's hope that never happens.