Egg Bishops look similar to a red-colored Egg Pawn with no legs. They wear wizard caps and have a red skirt-like covering with colored tips resembling a robe in place of legs. They also carry a staff.
The Egg Bishops first appeared in Sonic Heroes. They only appear in Hang Castle, Mystic Mansion, and Robot Storm (except for Team Rose). In this game, their pointed hats are colored dark blue with a stripe of a lighter shade of blue and have their robe-like covering tips colored blue.
Egg Bishops are usually accompanied by other enemies since they lack any direct offense to attack the player. When an Egg Bishop spots the player, it will cast a spell that fully replenishes the health of its surrounding fellow robots including itself. Using Power Formation attacks can destroy it in one hit. If the player uses Speed Formation's Tornado Jump (or Homing Attack at level 3) on an Egg Bishop, it causes it to flip over and become an Egg Magician.
Egg Bishops make another appearance in Sonic Rush where they are found in Mirage Road Act 1 and 2. In this game, they wear grey-colored pointed hats with a red stripe and the tips of their robe-like coverings are colored yellow. Unlike their appearance in Sonic Heroes, they attack by firing small energy pulses at Sonic or Blaze if they spot them. They also have no restorative powers nor can they transform into Egg Magicians.
- In the source code for the PC version of Sonic Heroes, there are rendering codes for an ability that were planned to render the Egg Bishop transparent if the opacity is lower than normal.