An Angry Enderman is an aggresive version of the vanilla Enderman. They do not spawn naturally in the End dimension, there is always a need of some third element (dragon, mob spawner).
Compared to their neutral brothers, the Angry Endermen have lower health and attack strength, but because of faster movement speed and constant aggro, they can be very dangerous in groups.
At this moment, the Angry Endermen can be spawned by the Ender Dragon, Ender Demon, and by spawners inside the Dungeon Towers. There are no light conditions for the spawning, which means you cannot get rid of them using any type of light source.
As any aggressive mob, they will attack players in proximity, and always play the aggro animation. Unlike vanilla Endermen, the angry ones will not lose the aggro until they die - natural damage still applies (water, fire, etc.) but will not make them neutral. The Endermen will still teleport if their target is out of range.
- Angry Endermen cannot pick blocks up