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"When there's time to lean, there's time to clean."

Grandma Tracy is a character from the Thunderbirds Are Go! television series. She is presumably the mother of Jeff Tracy, and thus the grandmother of the five Tracy brothers.

Personality and TraitsEdit

Despite her harmless appearance, Grandma is a vital member of International Rescue, and she is very supportive of the team. There may even be more than meets the eye with her.

Grandma Tracy shows love and compassion towards all of her Grandsons and Kayo (who sees Grandma Tracy like a Grandmother-figure). However it is very clear that she has a particularly strong bond with Virgil.


Main article: /Missions

While Grandma Tracy plays a minor role in most of the episodes she is in, she does have one main episode in which she is a great help to her grandson Virgil.


Virgil and Grandma Tracy are meeting up with Lady Penelope in London when a EMF generator cuts the power out to the entire city and anything over it (including Thunderbird 2). With the help of Grandma Tracy, they both track down the source of the power disruption and put a stop to it.



  • Her birth name is yet to be revealed.
  • She is a terrible cook. In Legacy, she acknowledged the fact to Brains, but on the condition it remained between them.
  • In Unplugged she mentions Grandpa Tracy, her dead husband, and gives Virgil Tracy his compass.
  • Grandma was one of two people who knew of Kayo's relationship with The Hood from the beginning. The second person who knew from beginning was Jeff. It is unknown as to whether Jeff told her about the relationship or whether she was present when the fact was revealed to Jeff.

=Foreign NamesEdit

  • Japanese: おばあちゃん
  • Chinese: 崔西奶奶

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