He is a normal pig who wears a gray Janitor hat with a snout on a dark spot.
Janitor Pig is calm but is mostly angry because things aren't how they should be, such as a Light Post and light bulbs.
He is like most of the pigs, being not so smart and happy. He also cries when something has to end, as shown in Final Curtain.
He owns a car, which is heard in Lost Piggy when he is called by the Singer Pig.