He almost always signifies that adult humor has been detected with his famous catchphrase, 'Goodnight everybody!'.

He has provided some great songs, like the famous 'Nations of the World', which is the most iconic thing about him.

He is the oldest of the Warner Siblings and thus a good example of the eldest sibling.

They follow a moral code of only harassing people who act like absolute jerkoffs, especially to them.

Even though they enjoy causing havoc among people unlucky enough to encounter them, they have helped out many historical figures like Michelangelo, Abraham Lincoln, you name it.

Being cartoon characters, they can defy the laws of physics in really creative ways.

They care for each other just like most real-life siblings do.They have great designs which harken back to 1930s animation.

They have provided some great songs like the Animaniacs theme song, 'What Are We?', 'The Senses Song', the titular song from the 'Piano Rag' segment, etc.

A majority of the show's humor comes from them.

Download animaniacs yakko wakko and dot