Rob was the assistant of Mr. Mason.
Physical appearance[]
Rob is an adult man with brown hair and a swirl on his chin. He wore a blue suit over a gray shirt and purple tie.
Personality[]
He was silent and calm when he was around his boss. However, he turned out to be annoyed about his displays being touched by kids with dirty hands and very protective of his displays and would do anything to keep them from being touched by the kids.
History[]

Rob unmasked.
He was with Mr. Mason at the museums main hall completely silent as he talked to the gang about there being a monster problem at the museum. He soon left the area with him when they agreed to help out with the case.
Rob was soon revealed to be responsible for the monster attacks around the museum. He was sick and tired of kids with dirty hands touching his displays and wanted to scare them off so they wouldn't get their hands on them.
But after three attempts on scaring the gang away, (includes being a haunted suit of armor, a mummy and a neanderthal). He was caught and presumably arrested afterwards.