Guillermo Márquez is Dora's baby brother. He is a 1-year-old baby who has a twin sister named Isabella. He wears a blue shirt and a white diaper. In Happy Birthday, Super Babies he wears a different shirt and blue pants. He appeared in many episodes of Dora the Explorer starting with "Big Sister Dora". Like Isabella, he remained unnamed until the episode "Dora's Jack-in-the-Box", where his name was revealed. Like Isabella, he appears in the Dora and Friends episode "Magic Land", in which he appears a little older and can speak in full sentences. They also helped Dora in the Super Babies trilogy (Super Babies, The Super Babies Dream Adventure, and Happy Birthday, Super Babies!).
Appearances[]
Season 4[]
- Big Sister Dora (unnamed)
- Super Babies (unnamed)
- Catch the Babies (unnamed)
Season 5[]
- Dora's Jack-in-the-Box
- Bark, Bark to Play Park
- The Super Babies Dream Adventure
- Dora's Big Birthday Adventure
Season 6[]
Dora's Explorer Girls[]
Season 7[]
- A Ribbon For Pinto
- Dora's Easter Adventure
- Feliz Dia De Los Padres
- Dora & Diego's Amazing Animal Circus Adventure
- Baby Bongo's Big Music Show
- Dora's Thanksgiving Day Parade
Season 8[]
Go, Diego, Go![]
Dora and Friends: Into the City[]
- Magic Land!
- Buddy Race
- Magical Mermaid Adventure
- Dora's Rainforest Reunion
- Trick or Treat
- The Ballerina and the Troll Prince
- Kate and Quackers
Trivia[]
- In Dora and Friends: Into the City!, a slightly older Guillermo lives with his sisters, parents, and Abuéla in the city of Playa Verde.
- He and Isabella never appear individually (one of them appear and the other doesn't).
Gallery[]
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Guillermo's first appearance (unnamed)
Guillermo with Isabella as babies.
Guillermo and Isabella as superheroes (better known as the Super Babies).
Dora, her family, and Boots celebrating his (and Isabella's) birthday.
Guillermo as a kid.
Guillermo with Isabella as children in Dora and Friends: Into the City!
The twins in their cribs.
Dora with Guillermo
He and Isabella putting in the hands in the air. They love to image themselves as superheroes!
The twins as kids.
The twins as kids (transparent)
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Pablo with Guillermo and Isabella
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