Hell Girl

Although not initially this way prior to becoming Hell Girl, Ai is shown to have a cold personality.

Even during emotion-evoking situations, she doesn't appear moved in the least. In addition to this, Ai is oddly silent and serious in most circumstances. However, she is shown to only talk when the need arises, rarely speaking directly for the sake of it. In spite of this, however, if Ai does talk out of ordinary circumstances, it is generally about something she believes is necessary for someone to know, or to correct somebody when needed. The main reason for her introverted personality is due to her emotions being locked up when she was made into Hell Girl.

As the series progresses, Ai becomes slightly more expressive, and a tad less cold, solemn, and silent. However, the difference is minor. The interactions from her side are a little more varied, and less grim later on, especially toward her clients and victims. In some scenarios, Ai goes to the lengths of mocking clients a bit like her servants before sending them to Hell.

She has also increased her attention and shown concern toward the more innocent clients and victims. An example of this would include the time when she reassured a lady who was requesting her to have Ren, one of Ai's companions, watch over her daughter after she willingly ended her life so that her daughter didn't have to be sent to Hell.

Later on, it is revealed that the Master of Hell is the one who ordered Ai to close off her emotions prior to becoming Hell Girl; however, in rare instances, Ai defies that order to use her feelings, especially hatred, to guide her actions, as opposed to only following the duties given to her. The first of such occurs near the end of the first season when she tries to take revenge for Sentarou Shibata's actions upon his descendants Tsugumi Shibata and Hajime Shibata. In many forms, Ai unsuccessfully urges Tsugumi to ask her to send her father, Hajime, to Hell.

Nevertheless, she burns down the temple which the adult Sentarou had built for her centuries before, suggesting that she refuses to accept repentance. In another example, Hone Onna reveals that when Ai was forced to send an innocent person to Hell, Ai silently screamed in her heart for having to do it, but she was unable to express or act on those emotions. Therefore, there are other brief glimpses of Ai's emotions throughout the three seasons of the anime, including the welling of tears in her eyes.

on planet Earth (hellgirl universe).