Despite apparently being the only human at Monster High, he is not afraid of or uncomfortable about being around monsters and is able to interact with them quite easily. Draculaura noted that he was unfazed when he met her father, who normally creeps out both human and monsters.
However, in the webisodes he seems much more wary around monsters, most likely due to being bullied at school for being a "normie". He even went as far as to say that he "didn't belong", and that no one would want him at Cleo's party in the episode Hyde and Shriek.
While the ghoulfriends are unaware of Jackson's/Holt's...
Frankie sighed as she looked in the door of the study howl. The Headmistress had heard about her issue and invited her to a panel, where the classmates could confess anything they wanted, with no-one judging.
She walked in and sat down next to Manny Taur and Spectra Vonderguist. Spectra was getting her phone ready to write about the monsters confessions, however Frankie just tapped the phone, turning it off, mouthing no to Spectra with a pained expression on her face.
The headmistress walked in.
"Right, now I'm aware that some of our youth at Monster High have been having...