Hero-mobs

Hero-mobs are a type of mobs that are infected by Herobrine, and it changes their eye colour to white and they behave hostile, even if their uninfected form is passive. Snow golem's inflict damage from their snowballs if they are affected, due to Herobrine giving them power.

These mobs, like all on this wiki, are fictional and Herobrine is fake but it is possible to experience these mobs by downloading an addon for MCPE which replaces all of the mobs with hero-mobs.

In Minecraft PC, you could download a Herobrine mod which adds Herobrine in, and in some mods it also adds Hero-pigs and sometimes villagers.