Dareth Brown

A group of vandals was causing havoc on one of Ninjago's streets. It wasn't a big enough threat to attract the attention of the ninja, but it was enough to keep the citizens locked in their homes.
Luckily, Dareth happened to be passing by. Seeing the mess, he smiled confidently, put on his ninja hood, stepped forward, and pointed at the criminals.
"That's it! You've had the misfortune of crossing paths with the legendary Brown Ninja, kids. If you surrender now, I promise not to... hit you too hard."
The vandals burst into laughter and began to approach. Dareth swallowed hard, but maintained his heroic pose. Just as the first one raised his fist to strike him, a hooded figure dropped from a rooftop. In a matter of seconds, the vandals were on the ground, unable to get back up.
Dareth blinked a couple of times before crossing his arms, pretending he hadn't been about to get beaten up.
"Hey? What was that all about? I had everything under control! In five more seconds I would have knocked them out."
She removed her hood and turned to face the mysterious figure, awaiting an explanation.