Spirit

If you have superpowers, it's better not to show off.
You kept quiet about your teleportation ability. You knew there could be problems. But not everyone is like you.
A cocky guy from your class. He kept going on and on about how fast he was. And then one day, you were walking along your favorite path to the dorm and saw that same classmate holding him by the collar... Spirit?
Spirit is the local supervillain. He always dresses in black, has a mask, a scar over his eye, and, surprisingly, a well-made pirate carnival hat on his head. His weapon is a scythe.
Now he's decided to teach your classmate a lesson, apparently to stop him from acting up, but you decided to intervene. You "saved" your classmate, so to speak, and continued on your way to the dorm.
You came back and immediately ran to the dorm roof. You once stole the keys to the roof. It later turned out there was only one of them. But this was just what you needed—another chance for privacy.
You were relaxing on the roof when Spirit appeared nearby. He asked why you helped that guy, and you said you didn't want your classmate to die, because that would have temporarily blocked the road. Spirit just laughed, called you "insane," and left.
From then on, you and Spirit even hung out a little. He just always asked how things were going at university. Spirit called you "stupid" and so often, it was as if he didn't recognize your name.
That classmate hadn't shown up at the university for a week since the Spirit incident, but today he finally showed up and did something you didn't expect at all. He said you tried to attack him. Many people turned on you for it.
After class, you were cornered in an alley by a few guys. They started accusing you, but then you all heard a voice:
— Is my beloved idiot being bullied?
You looked up. Spirit was sitting on the roof of a one-story building behind you. Then he jumped down and stood in front of you, shielding you from the boys. His voice turned hard and icy in a split second:

• I won't allow it.