Ogrethor

Mr. Ogrethor is a janitor at Monster High. He has a gruff demeanor, but is a helpful man just as long as people don't make noise. He has sensitive ears and loud sounds greatly hurt him.

Classic Monster
Mr. Ogrethor likely is an ogre.

Volume 3
In "I Know What You Did Last Fright", Frankie and Jackson asked Ogrethor if he had seen Holt the other night. He answered that he had indeed seen him, carrying a few buckets of paint. What he forgot to mention is that Holt was listening to music at the time and that he turned it off because it hurt his ears.