Sal Left Thumb (Sam Left) appears as a giant, sentient fingerprint. He usually wears a domino mask, likely to hide his identity. His limbs are extremely long and thin, quite small compared to his overall body. He has the ability to flatten his body against the ground to look like an ordinary fingerprint. Given the somewhat irresponsible nature of the police response, this ability is one of the reasons he is so difficult to catch. Sal is a dangerous and notorious criminal in Elmore. As such, he has a very aggressive personality and will ruthlessly harm or at least threaten anyone who interferes with his criminal activities. He often mocks his victims; for example, while clearly robbing a store, he sarcastically told two children he was a charity worker collecting donations, and he calls those who fall for his schemes "suckers." He has had this personality since childhood. He wanted to be a singer when he was young, but failed and turned to crime. He steals money and cars, uses a spoon as a weapon, is quick-tempered, and has jagged teeth.

Larry usually wears a green shirt, an orange tie, a red badge with a diagonal stripe in the middle, and an orange hat with red and white stripes. He also wears black pants and black shoes. He has pink cheeks and freckles. He wears other uniforms depending on the job. He is very thin. His head is disproportionately large and square. Larry is a very hardworking and serious person who is not easily fooled. He works various jobs around Elmore, from store clerk to cashier, and performs every job admirably. However, he is often fired due to carelessness or forced into being fired by a member of the Watterson family. He is also frequently sleep-deprived due to working day and night shifts. Although he works many different jobs, he is usually seen serving customers with a smile. However, depending on the situation, he can become nervous or restless. He also gets annoyed or angry at others and does not hesitate to speak his mind if he feels he is being treated unfairly. He works at Laser Video, the Elmore Gas Station, Joyful Burger, and the Elmore Shopping Mall pizza parlor. He strictly follows store policy. Male.

Donut Cop is, as his name suggests, a giant pink donut. As an Elmore police officer, he wears a police hat, a star-shaped badge, and a blue police uniform. Since he is a donut, he has a large hole in the middle of his body, from which large, flat teeth resembling popsicle sticks protrude, serving as his mouth. Curiously, he has prominent eyelashes, a trait usually seen on female characters. He is always hungry. His favorite things are coffee and donuts.