Arthur.exe is a screamer video based off of the PBS Kids series Arthur and was uploaded by YouTube user "Atarster" in 2014. It begins with the regular Arthur theme song, until the 0:11 second mark, when a crude, bloody and mangled MS Paint drawing of Arthur pops up on the screen, accompanied with a loud roar sound effect. The vídeo became famous from Atarster Angry German Kid vídeo series, where he is Leopold(the kid's name) worst nightmare. However, this screamer is not scary if you watch the series.
NOTE: The following video contains a screamer.