What are all the signs of Herobrine on Minecraft?

2 by 2 tunnels, trees with no leaves on them, strange objects that the game wouldn't generate.

There are no signs of herobrine as he is nonexis

Herobrine is only a plugin, he's not in normal vanilla minecraft

Sand pyramids, trees without leaves, random houses and torches, and random blocks burning.

Hate to break it to you but Herobrine really doesn't exist, he's just on modded servers

I am a herobrine detective asking for help