The Secret Saturdays Season 5

On the last and final year, Zak is now 19 years old and is about ready to destroy the 3rd and final piece of the Kur Stone, as he goes against Arghost after it. But in an old man who was remained in a tube of water comes after it, to become strong again.

Characters
Main Characters
 * Zak Saturday (Neil Patrick Harris) - now turn 19, as he now master the power of Kur to prepare the ultimate challenge as the world lie fate in the hand of him, determine to face the ultimate evil once and for all.
 * Doc Saturday (Phil Morris) - now wears an armor due to his paralyzim
 * Drew Saturday (Nicole Sullivan)
 * Fisk (Deidrich Bader)
 * Komodo (Frank Welker)
 * Zon (Dee Bradley Baker)
 * Doyle Blackwell (Will Friedle)
 * Jannifer Beeman (Kath Soucie)
 * Rachel Beeman (Tara Strong)
 * Wadi (Lauren Tom)- Zak's girlfriend and now wears a belly shirt and pony tail with bangs, in the final episode, Zak propose Wadi and ask her to merry him and she accepted as the two now became husband and wife.
 * Zak's Grandfather (Richard McGonagle) - Drew and Doyle's father, who had survived the crash caused by Argost

Allies

 * Miranda Grey (Susan Blakeslee) - Now the head of the organization known as Polarcap. She is like Drew Saturday, confident, admitting her own faults, and feels bloated at some points after 17 years!
 * Paul Cheechoo (Jeff Bennett) - Grey's new assistant and love interest.
 * Ulraj (Dee Bradley Baker) - old friend of Zak and is now full time king of his people!
 * Abbey Grey - Miranda's sister and once mercenary now officially become Doyle's girlfriend as she made promise to him to be together since the first season

Villains

 * Kur (Hank Azaria) - the main antagonist of the final season, he was ancient before mankind was born. He was born from ape to caveman to human then eventually he become all-powerful evil dragon know as Kur, as he rise again to begin his reign of evil over not just the world, but now the entire universe.
 * Old Man in a test tube/ Dr. Zanbar (Brian George) - requires the 3rd and final piece of the Kur Stone, to become all powerful and immortal again
 * Argost (Corey Burton) - is now the secondary antagonist of the final season, in the 1st episode, V.V. Argost revealed to be a clone like in season 4!