Daggerman
The person who takes over when the group turns into a mess. He’s like the leader of a bunch of crazy people. He makes everything worse and no one can stop him.
At the football game, Daggerman started a fight with the other team and no one knew why.
During the presentation, Daggerman kept interrupting and everyone got confused.
In the hallway, Daggerman started screaming at the principal and no one stopped him.