Me and my friend want to look for these creatures in minecraft? Have you seen them before? Do they exist?
No. Unfortunately I have to disappoint you…
No, they don't exist in normal games. However, if you play on the Java version you can download mods that add these creatures to the game
A pity
but there are those summoners who call herobrine into your world
You could add the two with mods, but they don't exist in normal games and they are nothing more than so-called "creepypasta".
Is a "Minecraft" myth. You can have them with mods, but Minecraft Vanilla doesn't have them.
These are mods
Pc or console?
Wii u
Can you install mods on it?
I think so
Then look for a tutorial on YT and get a Herobrine Mod
