Beryllia - Dimension the First

Main Hero

Sonic The Hedgehog

Action Hero:
Adaptational Jerkass: This Sonic does tend to be a lot more of a jerkass than his original counterpart.
All-Loving Hero: Sonic believes in protecting all living creatures whether small birds, Mobians or Humans. He rarely ever holds grudges.
Big Brother Mentor: He has this relationship with Mina. Teaching her how to control her speed and giving her mostly positive encouragement along the way to break her out of her boundaries.
Innocently Insensitive: Due to Sonic's large ego and cocky's attitude. He tends to say a lot of rude things to his friends sometimes. That seems incredibly insensitive. But in reality he is just trying to tease them and doesn't realize that what he is saying is actually upsetting people. As he almost finds out the hard way after teasing Knuckles about the war.
Jerk with a Heart of Gold: Despite his more jerkass tendacies. He is very protective of his friends and he does tend to apologize when he realizes that he took his teasing too far.
Thrill Seeker: He tends to seek out whatever adventures and dangers he can just for the excitement of it

Rosy the Rascal

Axe-Crazy: How much? If it's alive, it can be smashed.
Love Makes You Crazy: Similar to her counterpart in Mobius in that way. The difference is that her obsession with Scourge drove her to insanity.
Spikes of Villainy: Her Piko-Piko Mallet has its ends shaped into large, conical spikes, making it far more lethal than Amy's own hammer
Yandere: Rosy loves Scourge so much she wants to bust his head in. Her dream in Infinite's dimension consisted of her chasing him around until she captured him then hugging him until his head popped like a balloon. Sonic's disturbed reaction really shows how horrifying her thought process is

Miles

Dirty Coward: Miles, he is quick to stop taunting the heroes when Rosy threatens him with her hammer
Enfante Terrible: Miles, as if his Psychotic Smirk and his egotistical demeanor weren't big enough hints.
Evil Genius: Miles is cunning, ambitious, and an avid scholar in magic.
Evil Sorcerer: Miles is a skilled magic user. Though by his own admission he is mostly limited to using magic only in his own dimension. Since he needs to draw energy from his planet to use his spells.
Insufferable Genius: He tends to have a massive ego often looking down on people he sees as intellectually inferior
Sadist: He coldly mocks Sally over the destruction of Mobius. He openly takes enjoyment in seeing her so upset. He even admits he already knew that Mobius was likely already destroyed even before Sally made the trip through the portal. He just wanted to see her hopes die. He doesn't even seem to care that his own planet was destroyed as well.