- While the Forsaken have long been using bats as allies (and mounts, such as Forsaken flight paths), post-Cataclysm is the first time they have been seen independent of a flight master.
- Though mostly found throughout the more open-ended areas of the Undercity, a lone bat is seen with Lady Sylvanas Windrunner within her throne room, gliding around her pedestal, and will engage combat if Sylvanas is pulled.
- The Forsaken bats have a wide aggro range, and will also target intruders on the ground levels.
- Patch 7.0.3 (2016-07-19): Level increased from level 100 to level 110.
- Patch 6.0.3 (2014-10-28): Level increased from level 90 to level 100.
- Patch 5.0.4 (2012-08-28): Level increased from level 85 to level 90.
- Patch 4.0.3a (2010-11-23): Added.