B. Licker is a new enemy added in Wrath of The Lamb which is commonly found in the Catacombs and less commonly in Utero and Necropolis. They are initially chained up to multiple segments - up to five - similarly to Larry Jr.
B. Lickers are very fast and have moderate health, taking about five or six normal tears to die for each segment. They don't follow the player and move randomly around the room much like Larry Jr. They will also destroy Poop if they run into them, and are often spawned in rooms with a lot of Corn Poop, forcing you to deal with Guardian Flies as well.
However, once one of the segments is dead, the others will separate. Therefore when facing multiple chains of them, it is advisable to take them out group by group so you don't end up having plenty of B. Lickers swarming around in the room separately.
They can be defeated easily while still linked if you have an item that provides explosive shots, such as Dr Fetus/Epic Fetus or simply just spare Bombs. Piercing items, such as Technology or Cupid's Arrow also work well. Because they're fast, but can only move on the ground, items like Holy Grail or The Ladder will also help.
- If spawned in a one square area (i.e. blocked by Pits, Poop, and/or Rocks), they will be trapped and only the head segment will spawn, making them much easier to kill.
- Because of their random movements, it is possible for them to run into Fireplaces and take damage.
- If you kill one of two B. Lickers that are connected, the blood splash will still appear, but the B. Licker will still be alive. This can also happen with Larry Jr.