Personality
Aogaeru is shown to be greedy, just like most other Bathhouse workers, when he sneaks back into the bath room at night to try picking more gold left behind after the Unnamed River Spirit incident that could possibly be stuck in the cracks of the floorboards. He is subsequently consumed by No-Face after being enticed to walk up to him with some fake gold.
Trivia
-No-Face's assumed Aogaeru's voice after consuming him.
-Similarly, No-Face seems to absorb Aogaeru's greedy personality after consuming him. After No-Face regurgitates all of the people that he ate (including Aogaeru), he becomes calm and docile again. Further speculations about No-Faces powerful adaptability and behavior are elaborated on in his article.