Beret is a scientist who works at the Evil Corporation and has telekinetic abilities. After realizing how "evil" the mood of the Evil Corporation is, he decides to defeat Top Hat and escape it.
According to Kiwisauce, Beret's design was not influenced by anything.
"I started drawing a little green guy but I thought he was boring, so I gave him a hat and then his name became Beret." -Kiwisauce