Who is Mr. Whymper in Animal Farm?

Mr.
Whymper is a crafty lawyer who acts as an intermediary between the farm and the outside
world.

The Animalist revolution was supposed to usher in a bright new shining
future for the animals. Once they'd thrown off the yoke of human tyranny, the animals would be
able to build a paradise on Earth without needing any assistance from the hated human
oppressor.