Mary

Mary is the main character of HiImMaryMary. She uploads videos to YouTube about her life but is shy and covers her face even in the videos. She is trapped in what she believes is her parents' house for most of the series.

Biography
As mentioned above, Mary is trapped in a strange house. The doors and windows are locked. She has no memory of her life before waking up in this house, only that her name is probably Mary and this house is her parents' (or at least a copy of it, as she states that some things don't match her vague memories of the real house). Mary is haunted by demons inspired by her insecurities-- Beauty, a mirror-based demon that laughs at Mary's appearance, the women in black, who tells Mary that she is worthless and attacks her, the shadow, who is a huge shadow of a man that stalks Mary, and the darkness, a blob of shadow that catches her attention and gets her to follow it, then strengthened the other demons when she touches it.

Behind the scenes

 * Mary's real name, as in the girl who plays Mary, is named K.
 * Mary's scream in "Worse" is not her own. K's friend did the scream in that episode.