Annojoe has pale blue skin, pointy ears, navy blue hair with one long bang covering the right side of his face, red orange eyes with yellow sclera, and has a scar on his chin. He wears blue shorts, red boxing gloves, and black boots.
Right next to him is a small round little entity, who is pale pink, wears a eyepatch, and carries a small white cloth.
Annojoe causes the worst outcome the inspirited can think of to happen. Like most Yo-kai, not even he is above his own power's effect.
"Annojoe" is a wordplay on an'nojō (案の定, "sure enough, just as expected") and ano Joe (あのジョー, "that Joe").
Annojoe is a parody of Jou "Joe" Yabuki, the protagonist of Ashita no Joe, a famous boxing manga by Ikki Kajiwara, with his companion corresponding to Danpei Tange, an eyepatch-wearing retired boxer who acts as Joe's coach.
He is usually accompanied by a smaller entity which so far does not have his own entry as a Yo-kai. Annojoe calls him 'Oyassan'.