Mousers Attack!

"Mousers Attack!" is the eleventh episode of the animated series Teenage Mutant Ninja Turtles (2012 TV series). It aired on December 8, 2012.

Plot Synopsis
When the Turtles try to recover April's stolen cell phone, they discover simultaneous threats from the Purple Dragons and Baxter Stockman's mechanical Mousers. The Turtles are forced to split into two groups, and Donnie and Mikey must prove that their "B Team" is just as valuable as Leo and Raph's "A Team."

Trivia

 * This episode was originally titled "Mouserthon".
 * The name "Irma" appears on the caller ID of April's cell phone before it breaks.