Nubbins Sawyer/1st Timeline

Nubbins Sawyer, also known as The Hitchhiker, appears in The Texas Chain Saw Massacre and its sequel. He is a mentally unstable and murderous cannibal and grave robber; he lives with his equally depraved family in the back roads of Texas, capturing, torturing and feasting on unwary travelers.

Biography
Though sadistic and violent, he is generally one of the least threatening characters in the movie, being not very intelligent, and behaving erratically. The character also has a bizarre speech impediment and a large birth mark on the side of his face. His speech impediment came from the actor who portrayed him, Edwin Neal, who played the hitchhiker as someone who suffered from schizophrenia.

The Texas Chain Saw Massacre
As he is walking along a road, he is picked up by a group of friends traveling through the area, who feel sorry for him having to walk in the heat.

The group asks him what he was doing out there and he tells them that he was "over at the slaughterhouse" where he and "his brother" and "his grandfather" used to work. He shows them pictures of he and his family killing the cattle while telling them a story about how headcheese comes from the cows there when their heads are melted, all the while attempting to get them to drop him off at his home and even inviting them to dinner. He soon begins acting erratically after being given back the photographs by the disgusted travelers. The Hitchhiker suddenly pulls Franklin's pocket knife out of his grasp after he sees the crippled teen picking his fingernails with it. The group is shocked and appalled when the Hitchhiker uses Franklin's knife to cut open the palm of his own hand. Shortly after, the Hitchhiker shows-off the straight razor he keeps in his boot and then takes a picture of Franklin using a camera he pulls out of his satchel. After Franklin refuses to buy the picture, the Hitchhiker sets the photo on fire and slashes Franklin's arm with the straight razor before being kicked out of the van. The Hitchhiker briefly chases after the van, kicking and yelling as he smears a bloody handprint onto the side of the vehicle but soon relinquishes his attack on it. The smeared blood on the van was a symbol for Drayton to see which marked the teenagers' van as a target for murder.

The film later identifies the Hitchhiker as the brother of the two other main villains of the film, Leatherface and Drayton Sawyer, as well as the middle son of a family of mentally unstable and murderous cannibals. It's also revealed that he was the one responsible for the grave robberies mentioned at the beginning of the film. He was taking photographs of decomposed corpses and making horrific art and statues out of them at the cemetery. Together, they torment Sally Hardesty, Franklin's sister whom Drayton had captured. Eventually deciding to kill Sally, the Hitchhiker, Drayton and Leatherface are at first content to allow their highly-regarded Grandpa to do so, but when Grandpa proves unable to kill Sally with a hammer, the Hitchhiker and his brothers become impatient and over-eager with trying to help him. The Hitchhiker forgets to keep a hold on Sally when he tries to take the hammer from Grandpa, allowing her break free of their grasp and jump out a nearby window; as Sally flees, the Hitchhiker and Leatherface give chase to her, with the Hitchhiker catching up to her on a road. While slashing Sally with a knife, the Hitchhiker meets his demise when he is run over by an 18-wheeler.

The Texas Chainsaw Massacre Part 2
In this film he appears only as a macabre puppet-like corpse: his family has reassembled him after the events of the first film, and his twin brother, Chop Top carries him around and treats him as if he were still alive. The Hitchhiker's corpse is presumably destroyed when a hand grenade, set off by Drayton, blows up the family's hideout with the Hitchhiker's body in it.