Gumball: YOU'RE NOT MY BROTHER! YOU'RE JUST A FISH, WHO GREW LEGS!!!
Nicole beats up a Tyrannosaurus Rex!
Gumball defeating the evil virus in "The Virus". After it has them cornered after possessing cars and trying to run them down, Gumball challenges it to come and get him by appealing to its ego. After the virus emerges, Gumball simply steps on him. It's even more impressive because Gumball actually won by being smart for once. The anticlimax of it also makes is a Crowning Moment of Funny.
Richard gets one in "The Hero" for rescuing Gumball and Darwin from the car crusher in the junkyard.
In "The Limit" after Richard was tricked into being a man and demands Nicole do as he says, Nicole responds by giving him a Death Glare so deadly, it blows away all the stock on the store shelves.
At the end of "The Castle", Nicole forces the people who trashed her house by using a Penance Stare.
The song "Make The Most Of It" from "The Kids" counts as two, as it not only shows how awesome your childhood can be, but is also a great send off to Gumball and Darwin's original voice actors.
Richard shaving with an axe.
Darwin return to save Gumball from the turtle in "The Puppy".
Darwin: (in a gravelly older man's voice) You wanted to get rid of me by dragging me underwater. But there's one thing you forgot: I'm a fish—with legs! (kicks turtle).
In "The Name", Gumball finally finds something he can beat Zach at: