Java Edition pre-Classic rd-132328
From Minecraft Wiki
May 13, 2009
- Run randomly around the map with no proper AI or movement animation.
- The first mob to be added into the game.
- 100 spawn at random positions upon world generation and loading.
- Do not save to level.dat file.
- Once the world is closed and reopened, all humans previously there would have despawned and new ones would spawn in.