Pesh was, as a kid, fascinated with knights of the Medieval age, and hoped in his childhood to become one. However, Pesh got an accident, leaving a giant scar on his forehead. Pesh was embarrassed about that scar, so his father made an iron helmet after the Medieval age. Not very much has been known in Pesh's childhood besides that the scar was already gone when Pesh became a teenager, but he kept his iron helmet as a souvenir. This attracted Pashie, who is currently his girlfriend, and was his best friend in his childhood.
Pesh is a clever guy that risks his life for his friends, but throws himself in much greater danger, though thinking he actually can do it. He's also modest, but likes to make jokes and is sarcastic sometimes.
Just a puzzle
Pesh's debut was in the DS game Pusher's Pile. It's a puzzle game where Pesh gives commands to his Pushy to place the Nicey's rightly in a pile of Hazzies by bashing on it. With a link of four of the same color and form, Hazzies become Nicey's and fly away.
Pesh and Pashie both puzzle one field at the same time in Pusher's Pals, a sequel spin-off of Pusher's Pile. It's a game where both Pesh and Pashie can be controlled at the same time. Of course, since their Pushies are srarting different, their movement changed. It's still the objective to disappear the pile of Hazzies.