After the Time Portal malfunctions and fuses the students including Uzi and Toralei, Uzalei comes as the result of the fusion of Uzi and Toralei!

Uzalei: Bite me, purr-fectly. I'm just programmed to knock your entire species off the table of existence.

Now with the rebelious snarky attitude with the angsty railgun-toting traits combined, this is what becomes of it.