Matroskin is a white and grey (or white and blue) striped anthro cartoon cat from the cartoon series "Prostokvashino". Sometimes he wears a red scarf and felt boots.

The human boy Uncle Fiodor meets Matroskin in his hometown, then, sick of his arguing parents decides to leave to the village called Prostokvashino in the countryside, far away from the city and his parents.

The human boy Uncle Fiodor and Matroskin meet the talking, anthropomorphic dog named Sharik. The boy and the cat decide to take Sharik with them. Together, they find an abandoned house, whose owner allowed anybody to live in and take for their own. The 3 friends tidy up the house, fix it and start living in it together. At first, Matroskin the cat and Sharik, the dog, argue, both due to their nature and different personalities. But in time, they warm up to each other. After a quarrel in the New Year eve, Matroskin and Sharik make up and Sharik even kisses Matroskin, which makes Matroskin smile of a surprise.