Pip (voiced by Jeff Garcia) is the deuteragonist of the Barnyard franchise. He is a great, gray, barn mouse who speaks with a slight Mexican accent and often rides around on his best friend Otis' shoulder. He is known for his crush on Bessy, the sassy and sarcastic cow best friend of Abby, but she always rejects him. Pip's superhero ego is Ratboy, the sidekick of Cowman. Pip is not usually involved with the gang's crazy schemes as much as Freddy, Peck, Pig, etc. are (being a LITTLE more serious), but still, he usually comes along for the ride. Pip's human disguise makes people question him, to which another animal says 'He's the world's smallest man!'.
- His accent sounds a little Spanish, Portuguese, or Latin American.
- There are times Pip sounds exactly like Sheen Estevez from Jimmy Neutron, due to the same voice actor, Jeff Garcia.