Arthur Vance

, a character from the It Lives Beneath book, is your maternal grandfather. He is first seen in Chapter 1.

Personality
He is shown to be controlling, although this is because he thinks it will keep his grand-children safe. He can also be rude at times, given that he tells your character to go live with their biological father if they can't abide by his rules, although said father had abandoned his family several years ago.

Main Character (Harper)
Main Character mentions that they hadn't even met Arthur until their parents were murdered and he became Elliot's legal guardian. They already seem to have a hostile relationship given his controlling attitude and your character refers to him as a jerk when talking to both Elliot and Tom.