|Original broadcast||December 8, 2012|
|Written by||Kenny Byerly|
|Directed by||Michael Chang|
|Previous episode||Panic in the Sewers|
|Next episode||It Came from the Depths|
Mousers Attack! is the eleventh episode of the first season.
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."
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- Captain Ryan (TV screen)
- Rodriguez (only appearance; dies; TV screen)
- Other guy (only appearance; dies; TV screen)
- Mr. Crankshaw (TV screen)
- Irma (first appearance; video phone photo; cameo)
- Spike (no lines)
- Atomic Robo-X arcade game
- The Corps Cadavres
- April's cell phone (destroyed)
- M.O.U.S.E.R.S. (first appearance)
- Space-Heroes pinball machine
- Captain Ryan's ship (TV screen)
- This episode was originally titled Mouserthon.
- The name Irma appears on the caller ID of April's cell phone before it breaks.