Man (Dog of Man)

The Man is the main villain of the YouTube animation Dog of Man, created by the bizarre genius known as David Firth, which also made Dr. Papanak, from Salad Fingers.

Role
In the video, the man appears sad and depressed because he has nobody, no friends. Then his dog appears, telling him that he should get his own tumor and that the tumor would become his friend. The man listened and went to the store, buying a bag which creates tumor.

As the man went home, he lays on the ground, cutting his skin open, letting the tumor enter his body. As the time went by, the tumor became bigger and bigger and the man was close to dying. The dog appears again, telling the man that it will give it's body for the man to survive.

The man then brutally cuts the dogs body parts and cuts his head off. Appearing again with the dogs body thanking the dog for giving it's body.

Trivia

 * The video is supposedly representing that the dogs are the humans best friends.