He was the first Puffle to have the new puffle design, the second being Yarr.
He has the ordinary Puffle design unlike other puffles that belong to mascots, which does not fit into the design on PH's Player Card. This is due to the fact that Pete is treated as an orange puffle, rather than a hand item like Yarr and Cadence's Puffle. Darwin shares this trait.
In Issue #388 of the Club Penguin Times it is revealed that in the past he has eaten an entire cup of O-Berry Coffee (cup and all), PH's binoculars, eight sets of ear phones, four O-Berry bars, and most of PH's exotic potted plants.
PH was out in the Wilderness doing research when she encountered him.