It resembles a grey Egg Pawn, wields a staff, and has a skirt-like covering similar to a robe instead of legs that covers its other "personality", the Egg Bishop. It also has a mean expression on its "face".
The Egg Magician has an additional attack where it casts a circular blue magic light at the ground where, if the player or one of their teammates stand in the area, Rings will continually be absorbed from them. If a character stands in the area long enough, they will mysteriously vanish and that the player is unable to switch to that character until the Egg Magician is destroyed. If a Tornado Jump or a level 3 Homing Attack is used against the Egg Magician, it will flip over and become an Egg Bishop.