She seems to be a local celebrity in Draynor, having a task in the Lumbridge and Draynor Tasks named after them. Even Khnum, a former guard of Al Kharid and leader of The Skulls knows of Pigzilla. Indeed, Eli Bacon claims that the only reason Martin still keeps pigs is due to Pigzilla's celebrity status.
On one rare occasion, a sailor from the fabled Eastern Lands travelled to Port Sarim and encountered the famous pig in Draynor. He was baffled and told its story back home, which lead to the Easterners performing plays wherein an actor dresses as Pigzilla, defeating various monsters and stomping on miniature buildings.
Both her name and examine text are a reference to Godzilla.
Pigzilla was originally the size of an ordinary pig, but on 12 October, with the graphical update to pigs, one of the pigs in the Draynor Village pen was drastically increased in size. This may have originally been a bug, but a few weeks later new dialogue was added to Martin the Master Gardener that identified the pig as Pigzilla.
Before the release of Bringing Home the Bacon, Pigzilla was simply named "Pig", and had the examine text of "Swine.".
Her name in the Eastern Lands, Butakujira, literally translates from Japanese to "Pig-whale", referring to her huge size.