Leopold Slikk

Leopold Slikk (last name yet to be confirmed), also known as Angry German Kid, Keyboard Crusher etc., became an internet meme of his own, when a few years ago, he posted a video of himself on YouTube in wich he throws tantrums at his computer for being to slow, then gets killed in a Unreal Tournament game, resulting repeatedly smashing his keyboard in anger.

Ever since the video was uploaded, people questioned this was all real or not. It was finally revealed that Leopold was acting everything.

Connections to Adolf Hitler
It can be very possible that he's related to Adolf Hitler. Even family.
 * Both are German (though Hitler was born in Austria)
 * Both have a short temper, before ejecting huge tantrums.
 * Both throw stuff (Leopold his keyboard and Hitler some pencils)
 * Both are annoyed by a particular person (AGK by his computer and Hitler by Fegelein)

Downfall parodies
Angry German Kid is parodied in the Downfall parodies by two ways, the first one is where he's an enemy of Hitler, the second being where he's actually Hitler's family.

A few parodies establish Leopold as Hitler's son. Or a clone, made of Hitler's genetics.

He has a weapon similar to Hitler's Pencil of Doom called the Keyboard of Doom--Created by mythplatypuspwned.