Sebastian was roaming around the kitchen and library when I found him at the start of class. He said again that class doesn't start until we both are in the room, then during his way to his room he went into Mercer's room. He was sitting in Mercer's chair and both myself and Mercer's teacher Daniella had to ask him multiple time to leave so we both could start class. During this time both Mercer and Sebastian were mocking us repeating "Sebastian it's time for class." Once back in his room I informed him again that it starts at the designated time. He used the bathroom at 11:12-11:22 and at 11:52-11:54.