Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April), Hoon Lee (Splinter), Kevin Michael Richardson (Shredder), Nolan North (Kraang), Keith Silverstein (Kirby)
Written By: Brandon Auman
Directed By: Sebastian Montes & Ciro Nieli
Ep: 28
Invasion of the Squirrelanoids
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Hoon Lee (Splinter), Nolan North (Maintenance Worker / Homeless Man)
Written By: Todd Garfield
Directed By: Michael Chang
Ep: 29
Follow the Leader
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Hoon Lee (Splinter), Kevin Michael Richardson (Shredder), Kelly Hu (Karai)
Written By: Eugene Son
Directed By: Alan Wan
Ep: 30
Mutagen Man Unleashed
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April / Princess), Hoon Lee (Splinter), Josh Peck (Casey Jones), Roger Craig Smith (Mutagen Man), Brian Bloom (Dash), Nolan North (Lunk / Homeless Man), Scott Menville (Blip), Kevin Michael Richardson (Cop #1 / Cop #2)
Written By: Kevin Burke & Chris "Doc" Wyatt
Directed By: Sebastian Montes
Ep: 31
Mikey Gets Shellacne
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Hoon Lee (Splinter), Kelly Hu (Karai), Christian Lanz (Fishface), Clancy Brown (Dogpound / Rahzar), Phil LaMarr (Baxter Stockman)
Written By: Thomas Krajewski
Directed By: Alan Wan
Ep: 32
Target: April O'Neil
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April / Princess), Hoon Lee (Splinter), Kevin Michael Richardson (Shredder), Josh Peck (Casey Jones), Kelly Hu (Karai)
Written By: Nicole Dubuc
Directed By: Michael Chang
Ep: 33
Slash and Destroy
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Hoon Lee (Splinter), Corey Feldman (Slash), Andrew Kishino (Skullorax / Elderly Street Vendor), Pat Srivitana (Little Girl), Ciro Nieli (Pizza Delivery Kid)
Written By: Gavin Hignight
Directed By: Sebastian Montes
Ep: 34
The Good, the Bad and Casey Jones
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April / Princess), Hoon Lee (Splinter), Josh Peck (Casey Jones), Brian Bloom (Dash / Cyberoid X), Nolan North (Lunk), Scott Menville (Blip), Andrew Kishino (Fong / Sid / Shopkeeper / Homeless Man), Kate Miccuci (Irma), James Sie (Tsoi / Man)
Written By: Johnny Hartmann
Directed By: Michael Chang
Ep: 35
The Kraang Conspiracy
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April), Nolan North (Kraang), Roseanne Barr (Kraang Prime), Robert Forster (Kurtzman), Andrea Romano (Friendly Computer Voice)
Written By: Brandon Auman
Directed By: Alan Wan
Ep: 36
Fungus Humungous
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April / Princess), Hoon Lee (Splinter), Josh Peck (Casey Jones), Brian Bloom (Dash), Nolan North (Lunk / Sewer Worker), Scott Menville (Blip), Kevin Michael Richardson (General Unsura), Fred Tatasciore (Fungus Humungous)
Written By: Mark Henry
Directed By: Sebastian Montes
Ep: 37
Metalhead Rewired
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Hoon Lee (Splinter), Nolan North (Kraang), Lewis Black (Spider Bytez), Corey Feldman (Slash)
Written By: Peter Di Cicco
Directed By: Alan Wan
Ep: 38
Of Rats and Men
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo / Rat Man Freak), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April), Hoon Lee (Splinter / Truck Driver), Josh Peck (Casey Jones / Salesman), Kate Miccuci (Irma), Jeffrey Combs (Rat King), Kari Wahlgren (Joan Grody / Little Girl), Nolan North (Homeless Guy / Old Man / Man), Kevin Eastman (Ice Cream Kitty)
Written By: Todd Garfield
Directed By: Sebastian Montes
Ep: 39/40
The Manhattan Project
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello / 80's Raphael), Mae Whitman (April), Hoon Lee (Splinter), Kevin Michael Richardson (Shredder / Man #2), Nolan North (Kraang), Kelly Hu (Karai), Josh Peck (Casey Jones), Christian Lanz (Fishface), Clancy Brown (Rahzar), Eric Bauza (Tiger Claw / Man #1), Phil LaMarr (Baxter Stockman), Robert Forster (Kurtzman), Jim Meskimen (Carlos Chang O'Brien), Cam Clarke (80's Leonardo), Barry Gordon (80's Donatello), Townsend Coleman (80'a Michelangelo)
Written By: Brandon Auman & John Shirley
Directed By: Michael Chang & Alan Wan
Ep: 41
Mazes and Mutants
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April / Princess), Hoon Lee (Splinter), Paul Reubens (Sir Malachi), Nolan North (Lunk / Mind Master), Brian Bloom (Dash)
Written By: Eugene Son
Directed By: Michael Chang
Ep: 42
The Lonely Mutation of Baxter Stockman
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April), Hoon Lee (Splinter), Kevin Michael Richardson (Shredder), Josh Peck (Casey Jones), Phil LaMarr (Baxter Stockman / Stockman-Fly), Clancy Brown (Rahzar), Keith Silverstein (Kirby)
Written By: Brandon Auman
Directed By: Sebastian Montes
Ep: 43
Newtralized!
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Nolan North (Kraang), Josh Peck (Casey Jones), Corey Feldman (Slash), Danny Trejo (Newtralizer)
Written By: Gavin Hignight
Directed By: Alan Wan
Ep: 44
Pizza Face
Cast: Sean Astin (Raphael), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Dominic Catrambone (Leonardo), Mae Whitman (April / Princess), Kate Micucci (Irma), John DiMaggio (Pizza Face / Pizza), Ciro Nieli (Pizza Boy), Brian Bloom (Dash / Customer #1), Scott Menville (Blip / Customer #2), Nolan North (Lunk / Announcer / Customer #3)
Written By: Kevin Burke & Chris "Doc" Wyatt
Directed By: Sebastian Montes
Ep: 45
The Wrath of Tiger Claw
Cast: Sean Astin (Raphael), Jason Biggs (Leonardo), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Mae Whitman (April), Hoon Lee (Splinter), Kevin Michael Richardson (Shredder), Kelly Hu (Karai), Josh Peck (Casey Jones), Eric Bauza (Tiger Claw), Kate Micucci (Irma), Sab Shimono (Murakami), Keith Silverstein (Kirby)
Written By: Christopher Yost
Directed By: Michael Chang
Ep: 46
The Legend of the Kuro Kabuto
Cast: Sean Astin (Raphael), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Dominic Catrambone (Leonardo), Kevin Michael Richardson (Shredder), Kelly Hu (Karai), Eric Bauza (Tiger Claw), Clancy Brown (Rahzar), Christian Lanz (Fishface), J.B. Smoove (Zeck), Fred Tatasciore (Steranko)
Written By: Doug Langdale
Directed By: Alan Wan
Ep: 47
Plan 10
Cast: Sean Astin (Raphael), Greg Cipes (Michelangelo), Rob Paulsen (Donatello / Man #2), Dominic Catrambone (Leonardo), Mae Whitman (April / Terrified Woman), Hoon Lee (Splinter), Josh Peck (Casey Jones / Skele-Lord), Roseanne Barr (Kraang Prime), Nolan North (Kraang / Man #1), Brian Bloom (Dash), Scott Menville (Blip)
Written By: Henry Gilroy
Directed By: Michael Chang
Ep: 48
Vengeance is Mine
Cast: Sean Astin (Raphael), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Dominic Catrambone (Leonardo), Hoon Lee (Splinter), Kevin Michael Richardson (Shredder), Kelly Hu (Karai), Eric Bauza (Tiger Claw), Christian Lanz (Fishface), Phil LaMarr (Stockman-Fly)
Written By: Peter Di Cicco
Directed By: Sebastian Montes
Ep: 49
A Chinatown Ghost Story
Cast: Sean Astin (Raphael), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Dominic Catrambone (Leonardo), Mae Whitman (April), Josh Peck (Casey Jones), Kate Micucci (Irma), James Hong (Ho Chan), Andrew Kishino (Fong / Sid), James Sie (Tsoi)
Written By: Randolph Heard
Directed By: Alan Wan
Ep: 50
Into Dimension X!
Cast: Sean Astin (Raphael), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Dominic Catrambone (Leonardo), Nolan North (Kraang / Lunk), Peter Lurie (Leatherhead), Brian Bloom (Dash), Scott Menville (Blip)
Written By: Doug Langdale
Directed By: Sebastian Montes
Ep: 51/52
The Invasion
Cast: Sean Astin (Raphael), Greg Cipes (Michelangelo), Rob Paulsen (Donatello), Dominic Catrambone (Leonardo), Mae Whitman (April), Hoon Lee (Splinter), Kevin Michael Richardson (Shredder / Cop #2), Roseanne Barr (Kraang Prime), Gilbert Gottfried (Kraang Sub-Prime), Nolan North (Kraang), Josh Peck (Casey Jones), Kate Micucci (Irma / Woman), Keith Silverstein (Kirby), Eric Bauza (Tiger Claw / Man), Clancy Brown (Rahzar / Cop #1), Peter Lurie (Leatherhead), Jim Meskimen (Carlos Chang O'Brien)
