Seymourcro Contracticos, known as Sy, is a Mexican immigrant who is known for saying Si.
Sy wears a sombrero, a pancho and is known for his haircomb mustache. Sy is most known for saying the Spanish word "Si". He is a parody of one of Mel Blanc's Si-Sy classic routines with comedian, Jack Benny in The Jack Benny Show. Sy is seen with Jacques.