Astro is the Jetsons' family dog. Prior to being a Jetson his name was Tralfaz and he belonged to the fabulously rich Mr. Gottrockets. Astro is one of George's best friends (next to his work computer, R.U.D.I.) as well as Elroy's best buddy. He is able to speak in a rough sounding English resembling dog barks and growls much like Scooby-Doo.
- Astro met Winnie the Pooh and friends in Pooh's Adventures of The Jetsons Meet the Flintstones.
- Astro reunited with Winnie the Pooh and friends in Pooh's Adventures of Jetsons: The Movie.
- Astro guest starred in Pooh and Ash's Adventures of Scooby-Doo and the Headless Horseman of Halloween.
- Astro will guest star in Pooh's Adventures of The War of the Worlds (2005).
- Astro will meet Sora and his Friends in Sora Meets the Jetsons.