From Wikipedia:

Feathers McGraw is a fictional character who appears in the animated Wallace & Gromit film The Wrong Trousers.

A mute yet sinister penguin, Feathers appears after Wallace advertises for a lodger. As the story progresses, Feathers ingratiates himself with Wallace, gradually pushing Gromit out of the picture and causing him to run away.

Feathers takes an interest in the ex-NASA Techno Trousers that Wallace gives to Gromit for his birthday. He reconfigures the control panel, putting the controls into a remote, and taking control of the trousers. Spied on by Gromit, Feathers is revealed as a criminal mastermind who plans on using the trousers in his latest heist.

He disguises himself as a chicken by wearing a red rubber glove on his head. This is apparently enough to fool Wallace, possibly Gromit, and local law enforcement (at one point in the movie, Gromit spots a wanted poster of Feathers McGraw entitled, "Have You Seen This Chicken?").

This is Feathers McGraw not wearing the disguise:

This is Feathers wearing the disguise:

The genius of this work of art is found in the fact that there's no real difference between the actual Feathers and the disguised one. The rubber glove covers his head and not his face. In our world, Feathers is simply wearing a hat; in the other world, the animated world of Wallace & Gromit, the rubber glove makes Feathers look like another creature, a chicken. When Feathers wears the rubber glove, no one in Wallace & Gromit recognizes him—they can only see a chicken. Remove the glove: Feathers at once appears.

What is worth noting about this disguise and its incredible success is that it distorts by addition rather than subtraction. The people in Wallace & Gromit have an understanding or intelligence that breaks or malfunctions when information is increased. The addition of the rubber glove alters everything. Is this not a severe case or form or type of synecdoche? The part not only represents the whole but becomes it. The rubber glove imitates the comb of a chicken; the chicken's comb transforms the rest of the penguin into a chicken. Utterly amazing. I will never get enough of this Feathers McGraw character.