Ninja vs Chicken

After a long period of peace since the Ninja's victory over the Oni, the Ninja have all become quite lazy. Fed up, Wu arranged a meeting in the Monastery of Spinjitzu where he gave them a lecture on monks who became ninja to combat highly aggressive predators, one of which was in a nearby box. Wu then told them to survive for five minutes with what was inside the box and left after opening it, revealing a chicken. The Ninja assumed it was a joke... until it suddenly revealed its lightning powers and attacked them!

Example of:
Killer Rabbit