A video featuring a paladin named Leeroy Jenkins of the guild Pals for Life from the Laughing Skull Server became one of the first major World of Warcraft memes. In the video, a paladin foolishly runs into a nest of eggs which ends up killing his entire party in the Upper Black Rock Spire Rookery.
While neither drinking or the use of drugs are signs of an abusive personality, heavy drinking or drug abuse may be a warning sign and do increase the risks of abuse, especially violence, taking place. Often an abusive person will blame the drink for his/her abuse.
Most people with schizophrenia, however, are not violent toward others but are withdrawn and prefer to be left alone. Drug or alcohol abuse raises the risk of violence in people with schizophrenia, particularly if the illness is untreated, but also in people who have no mental illness.