Not much is known about her before iPenguin. She registered before Climber and Speedy, and used to live in Pengau City.
Petunia is a rather gentle person, and loves to be outside. She is quite fond of the Aguin Mountains, and is interested in archaeology. She also loves Pengau City, and wishes to one day return to it.
She thinks of Climber as a little brother, and cares a lot about him, and tries to make sure he is safe. She also treats Ana like an older sister, and looks up to her. Petunia also has a lot of respect towards Speedy and Professor Dune, but doesn't treat them as anything other than co-workers.