Herobrine and Entity303: The Truth Revealed

Hello, I am a Minecraft player and I have heard of both Herobrine and Entity 303, most people say Herobrine exists, but 303 doesn't, neither 303 nor Herobrine exists, or both exist and they have the wrong idea. If you haven't heard of a channel on YT named Headshot Productions TV, search him up, and you will see what he is trying to do.
==False Thoughts==
Herobrine was told to grief your world, hack, and kill you. He was also thought to have placed 3x3 sand pyramids in the water, shear trees, and place signs that say random messages from him to you. These thoughts are false. I have revealed the truth after doing much research. He was also thought to be Notch's dead brother because Notch said it, but then after getting questioned about it many times, he said he never had a brother that died, and Herobrine never existed.
Entity 303 as said before was supposedly thought to be a fired Mojang employee that is seeking revenge on Notch, so he hacked other players worlds, killed them, griefed their creations, and placed signs. This is a true thought, but some players got crash reports that had 303 all over them. People think Herobrine did this, but the truth is finally revealed...
==The Truth Behind the Eyes==
Herobrine was in the early alpha versions of Minecraft, he was the default skin, with full white eyes. Notch removed him, but players reported him coming back. Everyone says he griefed them, also in almost every update after his first removal, it will say
-Removed Herobrine
This is a joke that Notch keeps on doing in every update and should not be taken seriously.
Neither Herobrine or Entity 303 exist and have been confirmed hoaxes by the creators.