Cameos galore on the series finale of Avengers and Doctor Who's David Tennant is the keeper of lightsabers!

This week in the world of cartoons, we unfortunately see the series finale of Avengers: Earth's Mightiest Heroes, but we get a very cool Doctor Who/Star Wars crossover and My Little Pony: Friendship is Magic returns!

Regular Show and Adventure Time return next week, while DC Nation will return in 2013. As always - minor spoilers ahead!

Avengers: Earth's Mightiest Heroes – "Avengers Assemble!"


In the series finale of Avengers: Earth's Mightiest Heroes, Avengers from all across the Marvel Universe gather together to fight the ultimate foe - Galactus, the Devourer of Worlds. Check out this clip for a ton of cameos and a spectacular speech given by Captain America.



One of the best comic book-based cartoons in decades, Avengers: Earth's Mightiest Heroes successfully serviced comic book fans with quality storylines while keeping the show accessible to the uninitiated. Avengers: Earth's Mightiest Heroes , you will be missed.

Star Wars: The Clone Wars – "A Test of Strength"


The tenth doctor, David Tennant voices Huyang, an ancient droid of the Jedi Order who holds the intimate details of every lightsaber created.

Tennant's droid introduces itself to the Younglings in this clip.


Huyang will play a major role in the next two episodes of the Youngling arc as the group searches for the tools and techniques they need to create lightsabers of their own.

This second clip gives a taste of the trouble in store for the Younglings, as a band of space pirates plot to steal their valuable crystals.


Motorcity – "Reunion"


Added to the Saturday Morning Cartoons lineup due to commenter demand! Mortorcity revolves around a futuristic Detroit in the sky, Detroit Deluxe, ruled with strict laws that prohibit the driving of motor vehicles.

The series is known for it's excellent voice talent, including Mark Hamill and Dee Snider. This clip shows off Mark Hamill as the villain of the series and owner of Detroit Deluxe, Abraham Kane.


My Little Pony: Friendship is Magic – "The Crystal Empire - Part 1 & 2"


Bronies unite! My Little Pony: Friendship is Magic is back this week as Season 3 kicks off with a two-part episode.

In the two-parter, Twilight Sparkle is charged by Princess Celestia to prevent the vanishing of the Crystal Empire. Enjoy the Twilight Sparkle song-fest in this clip.


Teenage Mutant Ninja Turtles – "Never Say Xever"

Leonardo, being the nice ninja turtle he is, showed mercy to the young mischief maker Xever.

Xever is back to his old ways now, with Leo discovering that he broke into a restaurant. Will Leo regret his decision?


Top image courtesy of Marvel and Disney XD. My Little Pony: Friendship is Magic airs Saturdays on The Hub, while Avengers: Earth's Mightiest Heroes airs Sunday mornings on Disney XD. Teenage Mutant Ninja Turtles airs Saturdays on Nickelodeon while Clone Wars airs Saturday mornings on Cartoon Network.