The last member of the flying squirrel's race. A race of people that were killed between kingdom past and present, every squirrel escaped destruction except them who were left behind.
Nobody came back for them , though one small child survived.
He hates the current squirrels because he hates they made capes to emulate what the flying squirrel's once did , flew. So he's made it his mission to rip off the cape and destroy every last squirrel and make them pay for leaving them behind.
A cape allows a person to levitate and fly , a mixture of magic and science, Professor Frankenstein's son inspired may ideas to people around the world despite being so young so thats how they create the cape.

This flying squirrel doesn't need a cape to fly.