Student: Goblin

Name: Vic
Nickname: Goblin
Age: 15
Appearance: 4'3, wiry build, indeterminate gender, with a wide mouth and teeth like a shark. Soft, black hair in a ponytail. Toes and fingertips are equipped with short, black claws.
Notable Skills: Hiding, Biting, Exploring (Good Sense of Direction), Well-Spoken, Good with Numbers, Climbing, Computer Helpdesk
Quirks: draws maps, keeps a collection of camping supplies in a daypack in their room, likes exploring hard-to-reach places, good listener and keeps secrets, doesn't want to own anything more than they need

Goblin claims that they'd been living in the school for nearly three years before they emerged from hiding and started attending classes. Before that, they'd been living in the forgotten corners of a library before a newly-installed security system tripped them up, and before that there might have been an orphanage. Despite their somewhat feral appearance, Goblin has a rather serene, unflappable air about them. 

Their anomaly is notably unusual in that it combines some physical changes (small size, green skin, teeth and claws) with minor telekinesis and short-range teleportation. The telekinesis is enough to lift a couple of books, gum up a mechanis, or work a lock -- and it includes feedback, so Goblin can actually feel what they're doing with the power. Their teleportation can take them as much as ninety feet in any direction, but requires a three-second warmup.

Goblin's companions are mostly the other physical misfits -- Nightfox, Troll, Magehand, Tendril, and Leaves, among others -- but that doesn't seem to come from being shy or uncomfortable around people with more conventional appearances. Those just seem to be the people that Goblin thinks could use a friend.