SPECIES: Human

FAMILY: Mami, Papi, Abuela, Dora, Isabela and Diego

BEST FRIEND: His twin sister, Isabela

LOVES: Climbing and high-fives!

FIRST APPEARANCE: “Rainbow’s Lost Colors” (Season 1, Episode 3)

VOICED BY: Donovon Monzon-Sanders

Meet Guillermo, Dora’s little brother and Isabela’s twin brother! Guillermo is super energetic and loves giving out high fives to everyone he meets. Guillermo almost always has his twin sister Isabela by his side, and they make for an adorable dynamic duo. When Guillermo isn’t asking for a high five, he is usually trying to climb something – and that something is often Boots!