It depends on whatever Herobrine mod you've installed.
There are probably many Herobrine mods out there.
He is only in if you add him by a mod, there are many.
If you've added Herobrine to your game via a mod (and there are many), the exact way to find him will be explained in that mod's text. There is no Herobrine in the unmodded game.
It depends which mod you are using. There are many different mods that add Herobrine into Minecraft, you'd have to look at each specific mod to see.
Herobrine was Notch's evil brother who had killed many players. To put an end to this Notch killed Herobrine making Minecraft safe. I hope this helped Minecraftergal signing out!
It depends which mod you are using. Many mods add Herobrine, they all have different ways of summoning him or making him appear.
HeroBrine is not a real mob or character in minecraft vanilla (unmodded/mod-free). There have been many stories about Herobrine, but it is just a ghost story. It is possible you saw a block on the side of your screen, or a bug in the game. Notch has included "Removed Herobrine" In several updates now, but it was just a joke. Happy playing! :)
No but many people say there is one but there is many of them and they are watching everymove of your step
The exact behaviour of the Herobrine in your game, is determined by whichever of the many Herobrine mods you are using.
Lots of people "claim" to have seen Herobrine, but the truth is that Herobrine doesn't exist. There is no reference in the source code for any mob to act like Herobrine, therefore he is non existent. The only way Herobrine can exist is through mods.
3 {or 4 if you believe in herobrine} the 3 are Ender Dragon, Wither and the Elder Guardian
Herobrine has never been part of minecraft and is not a planned featureThus he does not appear in the game without the use of a mod