Enderman

Enderman were added to Minecraft in September 14, 2011.

Endermen do not attack unless provoked by a player or mob attacking them or looking at their body or head from up to 64 blocks away. When provoked, endermen open their mouths, shake with rage, and frequently make screaming sounds; when provoked by being stared at, they also make a lengthy, loud, threatening sound. If the player maintains eye contact, the enderman does not run, although it may teleport away. Once the player stops looking at the enderman, it runs toward the player to attack. If an aggravated enderman is hit by another player or mob, it ceases attacking its original victim. Endermen even attempt to retaliate against the ender dragon if the dragon hits a group of endermen. An aggravated enderman may also teleport to the location of a player or mob up to 4 chunks away.