"Parasitica"

Air Date
July 20th, 2013

Synopsis
While investigating a destroyed Kraang hideout, the Turtles are attacked by a giant mutant wasp, which stings Leo. After the wasp dies they find an egg, which Leo says should be brought back to the lair. That night, Raph tries to destroy the egg but Leo, who is under the influence of the wasp's toxin, is determined to protect the egg. Leo bites Raph, infecting him as well. Mikey and Donnie attempt to cure them, although Donnie gets infected before he can finish the antidote. Donnie instructs Mikey on how to prepare the cure before succumbing to the infection and biting him. Mikey finishes the antidote and administers the cure to his brothers just as the egg hatches. Mikey then kills the newborn wasps with the Shellraiser's cannon.

Major Characters

 * Leonardo (Jason Biggs)
 * Raphael (Sean Astin)
 * Donatello (Rob Paulsen)
 * Michelangelo (Greg Cipes)
 * Parasitica Wasp

Minor Characters

 * Space Heroes
 * Captain Ryan (Brian Bloom)
 * Crankshaw (Scott Menville)
 * Dr. Mindstrong
 * Hypnotica