There isn't an "Ascot" character in Toy Story 3. It's possible you are thinking of another character or a detail from the film. Could you provide more information about what you're looking for?
Perhaps you could tell me:
* What does the character look like?
* What is their role in the movie?
* What are some of the key moments they are involved in?
With more information, I can help you find the character you're looking for.