Season 4

The Fourth Season of the series were it features the turtles trying to find Mutgen scattered all over the city while dealing with old and new enemies while Kyle find out more about his real family.

​Character Appearances

 * Leonardo (26/26)
 * Raphael (26/26)
 * Donatello (26/26)
 * Michelangelo (26/26)
 * Master Splinter (23/26)
 * April O'Neil (16/26)
 * Casey Jones (14/26)
 * Kyle (26/26)
 * Dylan Bradford (26/26)
 * Virgil Maza (4/26)
 * Richie Foley (4/26)
 * Shredder (11/26)
 * The Kraang (11/26)
 * Karai (11/26)
 * Chris Bradford (7/26)
 * Xever Montes (7/26)
 * Tiger Claw (7/26)
 * Irma (7/26)

​Episodes/Chapters

 * 1) The Mutation Situation
 * 2) Invasion Of The Squirrelanoids
 * 3) Follow The Leader
 * 4) Mutgen Man Unleashed
 * 5) Mikey Gets Shellacne
 * 6) Target: April O'Neil
 * 7) Slash And Destroy
 * 8) The Good, The Bad, and Casey Jones
 * 9) The Kraang Conspiracy
 * 10) Fungas Hummgous
 * 11) Metalhead Rewired
 * 12) Of Rats And Man
 * 13) The Manhattan Project Part 1
 * 14) The Manhattan Project Part 2
 * 15) Mazes & Mutants
 * 16) The Lonley Mutation Of Baxter Stockman
 * 17) Newtralized!
 * 18) Pizza Face
 * 19) The Wrath Of Tiger Claw
 * 20) The Legend Of The Kuro Kabuto
 * 21) Plan 10
 * 22) Vengance Is Mine
 * 23) A Chinatown Ghost Story
 * 24) Into Dimension X!
 * 25) The Invasion Part 1
 * 26) The Invasion Part 2