Leo is a gravedigger working at the East Ardougne church, having been hired to bury the dead by Councillor Halgrive. However, he is rather incompetent, being unsure who he is meant to be burying, or the tools of his trade.
He is supposed to bury anybody who dies, but due to his incompetence often buries people incorrectly and resorts to asking others to sort out his errors. This formed the basis of the former random eventGravedigger, where players had to check the contents of five coffins and place the bones in the appropriate graves according to the headstones.
^Court Cases, "The Gravedigger v. The People", RuneScape. "Adventurers have sent reports that Leo tried to persuade them to 'tidy' some graves. These graves had been disturbed, and their coffins had become mixed up."