Mr. Palmero is the School Guidance Counselor for Westmore Middle School.
Role in The Ugly Truth
When it was time to sleep during the Lock-In, he stayed in the middle school auditorium to look after the boys. He told the boys if they needed to pass gas, they had to go behind the curtain on the stage to do it. A kid then made a farting noise from his hands to his mouth. Greg also mentioned that David Rosenburg made it reach its peak when he went down to the music room and brought back a tuba to make a loud sound with. He afterwards fell asleep, but the boys were still awake and tried their best to break out. However, soon a bunch of angry parents started knocking on the door and when Mr. Palmero finally opened it, they started arguing with him because they had tried to call their children but weren't able to because he had taken all the mobile phones and they all took their children home.
- Diary of a Wimpy Kid: The Ugly Truth (First and only appearance)
- According to page 157 of The Ugly Truth, he is the School Guidance Counselor.