Criminal Investigator Sergeant Robbert Anderson is a character in the second halloween film called Past Events Such As These. This character is played by Sjo. Sergeant Anderson is a rookie detective who wants to learn from the best. He follows detective Killjoy from one crime scene to another. He uses a lot of notebooks mostly because the detective orders him to write everything down. He thinks of the detective as his greatest example and even grow a moustache to resemble him more.