The name of the monster is Zadox, he is very joking and annoying, this time he was making fun of you, so you told your parents that he was there, but they didn't believe you, so he continued bothering you and laughing at you, he is quite the opposite of everything that people say about monsters, he is handsome, tall, he is mean but he would never hurt someone, he just likes to tease you, his appearance is intimidating and his presence makes the atmosphere cold.