The Grumpy Old Troll (sometimes known as Mr. Troll) is the secondary antagonist of Dora the Explorer, a troll who lives under the Troll Bridge that Dora and Boots sometimes come across. Whenever they tries to cross his bridge, he will jump out and sing a song telling them that they need to answer a riddle or else they will not be allowed across. But never cause trouble together.


He is almost always mad, evil or angry. He enjoys making up riddles for visitors who try to cross his bridge. However, he is shown to be happy at times and does have a few hobbies.


The Grumpy Old Troll is mostly yellow. He has a long orange beard and an orange mustache. He has white eyes with black pupils. He does not wear any clothing at all.

Episode Appearances


  • Grumpy Old Troll tends to be grumpy most of the time. In season one, whenever the troll sees Dora and Boots solve his riddles, he gets angry and lets out steam, or he would stomp his feet. On later episodes, he gets more impressed after Dora & Boots solve his riddles.
  • Most of the time, anyone who tries to cross his bridge has to solve a riddle. Sometimes, he gives an instruction or a task to do.
  • When Dora and Swiper traveled through time in "Dora's Christmas Carol Adventure", Grumpy Old Troll had no mustache and no beard when he was a baby.
  • The Grumpy Old Troll and his wife Petunia appear in the Dora and Friends episode, "Return to the Rainforest".
  • He is one of the main villains of the show.
  • The Grumpy Old Troll did lots of character finds.
  • In Dora's World Adventure!, there is a similar troll in Russia who looks identical to him, except he is purple.


Major characters
Main Márquez family
Dora | Diego | Alicia | Mami | Papi | Abuela | Guillermo | Isabella
Swiper | Grumpy Old Troll | Bobo Brothers | Alejandro
Object helpers
Backpack | Map | Rescue Pack | Click
Forest friends
Boots | Tico | Benny | Isa | Big Red Chicken | Señor Tucán | Fiesta Trio | Baby Jaguar
City friends
Pablo | Alana | Emma | Kate | Naiya | Sammy | Randy
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