It looks like it is split in half, with the top half being white and the bottom being black. This will make an Enderman banner, with the purple, piercing eyes placed squarely in the middle.

A Minecraft Redditor recently encountered an Enderman that does not attack even ... They are completely black, tall creatures that have the ability to teleport. Furthermore, they closely resemble ...

After eye contact is made, they become hostile and attack with swift, teleporting strikes. The Enderman's distorted sounds and erratic movement give them an unsettling aura, adding to the suspense ...