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Yes! In fact, Gwen's name is Gwendolyn Tennyson and Ben's is Benjamin Tennyson

and the both called Grandpa Max Grandpa and also Gwen calls Ben's mom Aunt Sandra. In Ben 10 Alien Force there is an episode which telss Gwen is Ben's cousin.

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14y ago

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More answers

No - They are both 10 years old in the original series and 15 years old in Alien Force. Despite only being cousins, they were actually born on the same day (as revealed in "Camp Fear" - An episode of the original series!)

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15y ago
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Gwen is 10 in the original Ben 10.Gwen and Ben share their birthdays.Just watch episode7,season2:Camp Fear.

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15y ago
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Gwen is Ben's cosin in Ben 10

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Wiki User

11y ago
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yes she is hot

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Wiki User

15y ago
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Gwen is 10 years old.

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Wiki User

15y ago
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gwen is 10 years old

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Wiki User

13y ago
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Ben is 10 years old.

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Wiki User

14y ago
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No, she's his cousin.

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Wiki User

12y ago
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Q: Is Gwen on Ben 10 older then Ben?
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