To Michelangelo’s chagrin, the Turtles must venture back down to the underground city to investigate, after Donatello’s crystals start glowing at the same time that massive earthquakes shake the world. But none of them are prepared for what they are about to learn about the Earth’s history.

.TMNT 2005 S03-E16 “The Entity Below” 1/2

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.TMNT 2005 S03-E16 “The Entity Below” 2/2

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Popularity: 7%

The Turtles are overjoyed to encounter an old friend whom they thought was dead, and they all set out to lower the floating city of Beijing back to the Earth’s surface. Going against her father’s wishes, Karai secretly tries to help the Turtles, while, Baxter Stockman, whose technological skills are at risk of being usurped, tries to get rid of Dr. Chaplin.

.TMNT 2005 S03-E15 “Mission of Gravity” 1/2

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.TMNT 2005 S03-E15 “Mission of Gravity” 2/2

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Popularity: 8%

Angel asks the Turtles to help her find her brother, who went missing after exploring some tunnels under an old mansion. The Turtles venture in and encounter a disturbing centuries-old monster, which captures them and forces each Turtle to confront his greatest fear.

.TMNT 2005 S03-E14 “The Darkness Within” 1/2

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.TMNT 2005 S03-E14 “The Darkness Within” 2/2

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Popularity: 7%

In a solo adventure, Michelangelo attempts to thwart the Purple Dragons in their attempt to steal a truck full of toys meant to be delivered to an orphanage for Christmas. He also comes across a stray kitten, which he takes under his wing and names him Klunk. At the lair, Mikey’s brothers and Master Splinter plan a huge feast and invite all their friends.

.TMNT 2005 S03-E13 “The Christmas Aliens” 1/2

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.TMNT 2005 S03-E13 “The Christmas Aliens” 2/2

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Popularity: 13%

April asks the Turtles to teach her martial arts, and they refuse, knowing they could do more harm than good by training her without sufficient expertise. They tell her about the last time they tried to train a preteen boy, back when the Turtles themselves were much younger.

.TMNT 2005 S03-E12 “The Lesson” 1/2

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.TMNT 2005 S03-E12 “The Lesson” 2/2

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Popularity: 8%

The Turtles explore a crashed Triceraton ship that was left in the Hudson River after the alien invasion. Here they encounter three “Karaibots”–dangerous robots designed by Baxter Stockman’s overly enthusiastic young apprentice, Dr. Chaplin.

.TMNT 2005 S03-E11 “New Blood” 1/2

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.TMNT 2005 S03-E11 “New Blood” 2/2

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Popularity: 9%

Leonardo and Michalangalo meet up with caped crusader Nobody and attempt to help him out…well Mikey does anyway.

.TMNT 2005 S03-E10 “Nobody’s Fool” 1/2

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.TMNT 2005 S03-E10 “Nobody’s Fool” 2/2

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Popularity: 10%

The gang is relaxing in the countryside when their peace is shattered by some violent, alien-hating survivalists. Raphael and Donatello try to put a stop to them–and deal with an atomic bomb–while April’s and Casey’s relationship is put at risk by the arrival of Casey’s overprotective mother.

.TMNT 2005 S03-E09 “H.A.T.E.” (1/2)

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.TMNT 2005 S03-E09 “H.A.T.E.” (2/2)

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Popularity: 11%

A big game hunter searches the sewers, seeking a giant crocodile rumoured to live in them. He runs into an emotionally unstable Leatherhead, who has been living in the Turtles’ lair.

.TMNT 2005 S03-E08 “Hunted” (1/2)

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.TMNT 2005 S03-E08 “Hunted” (2/2)

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Popularity: 12%

Raphael seeks shelter and learns a lesson in empathy when an angry mob looking for aliens chases him through the New York City alleys. Meanwhile, Master Splinter and Michelangelo must fight two hired assassins possessing super-strength and super-speed abilities.

.TMNT 2005 S03-E07 “Touch and Go” (1/2)

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.TMNT 2005 S03-E07 “Touch and Go” (2/2)

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Popularity: 10%