What really sets your character apart from other characters, and makes your character unique?
Sparky loves making bombs, setting fires, and causing death. Anyone looking at him can see there's clearly something wrong with him. However, he has that... something about him that is just kind of likeable. Something that says: "Hey, lets go along with this, and see what happens. I mean, it's not a half bad plan, right? What's the worst that could happen?"

What's a serious flaw your character has, that he/she has difficulty overcoming even when it matters most? Feel free to list more than one.
Sparky always has problems not experimenting, blowing up, burning, or taking something strange apart to look at it, such as that one time with the fuel cell. And the several dozen litres of gasoline. That entire side of the school was never the same, afterwards...

Does your character have any interests? Hobbies? Passions or strong opinions? Relate two or more of these.
Making bombs, trying to hack computers (even though he sucks), playing games, telling jokes, making bombs, and lighting things on fire. Did I mention the bombs?

Tell a short story about a scenario where your character would be in his/her element.
They were like cannon fodder, firing wildly at him. He charged, slashing left and right, killing swaths of the muderbots. As the countdown in his HUD neared 0, he ran quickly away, zoidberging. When the timer hit zero, a voice said: "Have a nice day. Please come again.", and half of the facility exploded, and shot fireworks into the sky.

Tell a short story about a scenario where your character is forced to make a difficult decision.
He stared through the thick, two way mirror. He had a tough choice ahead. He could push the red button, which would have the horrible consequence of blowing up the contents of the room. Alternately, he could push the other red button, which would have the equally horrible consequence of setting it fire. He stared at the room full of watermelons, and cried, not knowing which way of destroying them all would be more awesome. Which button?!?!?