When Mordecai, rigby, fluttershy approached the principal's office as they knocked on the door
???: come in
Then they saw a woman named principal celestia on her desk

Fluttershy: um I have someone new in this school and he saved me from sunset shimmer
Celestia: that's wonderful I cannot wait for the schedule you two you can sit while you can get to class
Fluttershy: okay bye Mordecai and rigby oh and Mordecai thanks for saving me
Mordecai: hey it's no problem I can save anybody from trouble
Fluttershy smiled and walked off as Mordecai and rigby sit on their chairs
Celestia: welcome to canterlot high we've always welcomed the new student to here and you can sign up please
Mordecai: my name is Mordecai
Rigby: and I am rigby
Mordecai: and we've came from... Seattle high school
Celestia: thank you for signing up and thanks for the way you did to one of the students and you meet other friends
Mordecai: okay we'll gotta go to our class
When Mordecai and rigby walked off as principal celestia watching them
Celestia: I can keep my eyes to them very closely
To be continued