Princess Sapphire is a girl raised as a Prince. Through the mischief of an angel, the princess is born with both a girl's and a boy's heart. Since there is no boy successor in her kingdom, Sapphire is raised as a boy, but evil ministers try to reveal her secret. Unable to put up with the kind of vicious conduct prevailing in the kingdom, Sapphire disguises herself as "Princess Knight" and wields her sword of justice.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Knighty Knight Dragons | 2017-01-09 | 30 min |
| Season 1 | Episode 2 | Inside and Seek | 2017-01-09 | 30 min |
| Season 1 | Episode 3 | Sir Clod | 2017-02-06 | 30 min |
| Season 1 | Episode 4 | Up All Knight | 2017-02-06 | 30 min |
| Season 1 | Episode 5 | Princess Nella's Orc-hestra | 2017-02-08 | 30 min |
| Season 1 | Episode 6 | The Blaine Game | 2017-02-08 | 30 min |
| Season 1 | Episode 7 | New Kid in the Kingdom | 2017-02-10 | 30 min |
| Season 1 | Episode 8 | Big Birthday Surprise | 2017-02-10 | 30 min |
| Season 1 | Episode 9 | That's What Best Friends Are For | 2017-02-14 | 30 min |
| Season 1 | Episode 10 | In Hot Watermelon | 2017-02-14 | 30 min |
| Season 1 | Episode 11 | The Dragon Bully | 2017-02-16 | 15 min |
| Season 1 | Episode 12 | Royaliscious Plumberry | 2017-02-16 | 30 min |
| Season 1 | Episode 13 | The Sparkle Fest Showdown | 2017-03-03 | 30 min |
| Season 1 | Episode 14 | The Sparkle Splash Friends Day | 2017-03-03 | 30 min |
| Season 1 | Episode 15 | Sir Coach's Knightly Trading Card | 2017-03-17 | 30 min |
| Season 1 | Episode 16 | A Knight's Tale | 2017-03-17 | 30 min |
| Season 1 | Episode 17 | Three's a Crowd | 2017-03-30 | 30 min |
| Season 1 | Episode 18 | More Than Meets the Eye | 2017-03-30 | 30 min |
| Season 1 | Episode 19 | The Flutter Blunder | 2017-05-05 | 15 min |
| Season 1 | Episode 20 | A Striking Surprise | 2017-05-05 | 15 min |
| Season 1 | Episode 21 | No Gown, No Crown, No Party | 2017-05-19 | 15 min |
| Season 1 | Episode 22 | Clod Monet | 2017-05-19 | 15 min |
| Season 1 | Episode 23 | Snorkelmanders Just Wanna Have Fun | 2017-06-10 | 15 min |
| Season 1 | Episode 24 | Stop Dragon Me Around | 2017-06-10 | 15 min |
| Season 1 | Episode 25 | Princess Nella's Perfect Family Picture | 2017-06-17 | 15 min |
| Season 1 | Episode 26 | Giant Trouble | 2017-06-17 | 15 min |
| Season 1 | Episode 27 | Knighty Knight Dragons | 2017-06-23 | 15 min |
| Season 1 | Episode 28 | Inside and Seek | 2017-06-23 | 15 min |
| Season 1 | Episode 29 | Of Critters and Dragons | 2017-06-30 | 15 min |
| Season 1 | Episode 30 | Carriages, Carts and Giantmobiles | 2017-06-30 | 15 min |
| Season 1 | Episode 31 | Nella vs. The Wicked Wizard | 2017-08-11 | 30 min |
| Season 1 | Episode 32 | Princess Nella's Perfect Family Picture | 2017-09-15 | 15 min |
| Season 1 | Episode 33 | Giant Trouble | 2017-09-15 | 15 min |
| Season 1 | Episode 34 | The Halloween Hippogriff | 2017-10-13 | 15 min |
| Season 1 | Episode 35 | King Gork the First | 2017-10-13 | 15 min |
| Season 1 | Episode 36 | Trink on the Rink | 2017-10-20 | 15 min |
| Season 1 | Episode 37 | The Brave Dragon | 2017-10-20 | 15 min |
| Season 1 | Episode 38 | Sir Coach's Quest | 2017-10-27 | 15 min |
| Season 1 | Episode 39 | The Dragon Knight | 2017-10-27 | 15 min |
| Season 1 | Episode 40 | Triple Play | 2017-11-03 | 15 min |
| Season 1 | Episode 41 | Flutter 2.0 | 2017-11-03 | 15 min |
| Season 1 | Episode 42 | The Fanciest of Them All | 2017-11-17 | 15 min |
| Season 1 | Episode 43 | Practice Makes Progress | 2017-11-17 | 15 min |
| Season 1 | Episode 45 | Let It Snow | 2018-02-12 | 15 min |
| Season 1 | Episode 46 | Go Dragondaisies! Go! | 2018-02-12 | 15 min |
| Season 1 | Episode 47 | Sir Blaine's Quest for Badges | 2018-02-14 | 15 min |
| Season 1 | Episode 48 | Trinket's Big Break | 2018-02-14 | 15 min |
| Season 1 | Episode 49 | Surf's Down | 2018-02-16 | 15 min |
| Season 1 | Episode 50 | One Giant Journey | 2018-02-16 | 15 min |
| Season 1 | Episode 51 | Nella's A-Maz-Ing Adventure | 2018-02-21 | 15 min |
| Season 1 | Episode 52 | Castlehaven Wrap Battle | 2018-02-21 | 15 min |
| Season 1 | Episode 53 | Tricks of the Trade | 2018-02-23 | 15 min |
| Season 1 | Episode 54 | The Taste Race | 2018-03-26 | 15 min |
| Season 1 | Episode 55 | A Very Clothes Call | 2018-03-27 | 15 min |
| Season 1 | Episode 56 | Dragon Taggin' | 2018-03-28 | 15 min |
| Season 1 | Episode 57 | The Day the Music Stopped | 2018-03-29 | 15 min |
| Season 1 | Episode 58 | The Clod Couple | 2018-03-30 | 15 min |
| Season 2 | Episode 1 | Queen Mom's Day | 2018-07-13 | 15 min |
| Season 2 | Episode 2 | Dragon Playdate Disaster | 2018-07-13 | 15 min |
| Season 2 | Episode 3 | The Duke of Sparkleburg | 2018-07-13 | 15 min |
| Season 2 | Episode 4 | A Royal Cliffhanger | 2018-07-13 | 15 min |
| Season 2 | Episode 5 | Quest in the Castle | 2018-07-13 | 15 min |
| Season 2 | Episode 6 | Cute Critter Watching | 2018-07-13 | 15 min |
| Season 2 | Episode 7 | The Unicorn of the Lake | 2018-07-16 | 15 min |
| Season 2 | Episode 8 | Trinket's Toy Trouble | 2018-07-16 | 15 min |
| Season 2 | Episode 9 | Nella Ever After | 2018-07-26 | 15 min |
| Season 2 | Episode 10 | One Two Switcheroo! | 2018-07-26 | 15 min |
| Season 2 | Episode 11 | The Bravie Awards | 2018-08-01 | 15 min |
| Season 2 | Episode 12 | The Museum of Knightly Magic | 2018-08-01 | 15 min |
| Season 2 | Episode 13 | A Princess Knight Never Gives Up | 2018-08-26 | 15 min |
| Season 2 | Episode 14 | Joust About Time | 2018-08-26 | 15 min |
| Season 2 | Episode 15 | Knight Riders | 2018-09-17 | 15 min |
| Season 2 | Episode 16 | The Knight Who Cried Seamonster | 2018-09-17 | 15 min |
| Season 2 | Episode 17 | Frozen Trinket | 2018-10-22 | 15 min |
| Season 2 | Episode 18 | Anything for a Friend | 2018-10-22 | 15 min |
| Season 2 | Episode 19 | The Courage Carriage | 2018-09-23 | 15 min |
| Season 2 | Episode 20 | The Castlehaven Rescue Club | 2018-09-23 | 15 min |
| Season 2 | Episode 21 | The Unicorn Rescue | 2018-12-04 | 15 min |
| Season 2 | Episode 22 | Awesome Blossom | 2019-01-20 | 15 min |
| Season 2 | Episode 23 | A Dragon Ate My Homework! | 2019-01-20 | 15 min |
| Season 2 | Episode 24 | Norma's Very Big Day | 2019-02-09 | 15 min |
| Season 2 | Episode 25 | Minatori's Tea Party | 2019-02-09 | 15 min |
| Season 2 | Episode 26 | Clod's Big Bounce | 2019-03-02 | 15 min |
| Season 2 | Episode 27 | The New Neighbors | 2019-03-02 | 15 min |
| Season 2 | Episode 28 | A Need for Steed | 2019-03-31 | 15 min |
| Season 2 | Episode 29 | Trinket's Lost Voice | 2019-03-31 | 15 min |
| Season 2 | Episode 30 | Trinket's Bad Hair Day | 2019-04-28 | 15 min |
| Season 2 | Episode 31 | Blaine Stirs Things Up | 2019-04-28 | 15 min |
| Season 2 | Episode 32 | Nella in Bowling Land | 2019-05-26 | 15 min |
| Season 2 | Episode 33 | A Tricksy Wedding | 2019-05-26 | 15 min |
| Season 2 | Episode 34 | See You Later Gladiator | 2019-06-16 | 15 min |
| Season 2 | Episode 35 | Clod O'Matic | 2019-06-16 | 15 min |
| Season 2 | Episode 36 | Just Another Manic Mud Day | 2019-07-21 | 15 min |
| Season 2 | Episode 37 | Best Friends Forever | 2019-07-21 | 15 min |
| Season 2 | Episode 38 | Knights of the Sparkly Table | 2019-08-18 | 15 min |
| Season 2 | Episode 39 | Knights to the Rescue | 2019-08-18 | 15 min |
| Season 2 | Episode 40 | Winning Friends | 2019-09-08 | 15 min |
| Season 2 | Episode 41 | Willow Gets to the Root of It | 2019-09-08 | 15 min |
| Season 2 | Episode 42 | The Tooth Fairy Tale | 2019-09-22 | 15 min |
| Season 2 | Episode 43 | Tough Break for Garrett | 2019-09-22 | 15 min |
| Season 2 | Episode 44 | Bouncy Babies and Springy Kings | 2019-10-06 | 15 min |
| Season 2 | Episode 45 | Rock-A-Bye-Baby | 2019-10-06 | 15 min |
| Season 2 | Episode 46 | Piece of Cake | 2019-10-20 | 15 min |
| Season 2 | Episode 47 | A Tale of Two Nellas | 2019-10-20 | 15 min |
| Season 2 | Episode 48 | A Chompling Sleepover | 2019-11-15 | 15 min |
| Season 2 | Episode 49 | Knights Making News | 2019-11-15 | 15 min |
| Season 2 | Episode 50 | Freezing Out the Fleagles | 2019-12-08 | 15 min |
| Season 2 | Episode 51 | The Big Concert | 2019-12-08 | 15 min |
| Season 2 | Episode 52 | Cheeks the Showstopper | 2019-11-24 | 15 min |
| Season 2 | Episode 53 | Dwayning Day | 2019-11-24 | 15 min |
| Season 2 | Episode 54 | Cici Saves the Day | 2021-07-21 | 15 min |
| Season 2 | Episode 55 | Big Little Rides | 2021-07-21 | 15 min |
| Season 2 | Episode 56 | The Queen's Court | 2021-07-22 | 15 min |
| Season 2 | Episode 57 | Picture Perfect | 2021-07-22 | 15 min |
| Season 2 | Episode 58 | The Great Sparkle Quest | 2021-07-23 | 15 min |
| Season 2 | Episode 59 | Twinkle Twinkle Family Vacation | 2021-07-23 | 15 min |
| Writing | Osamu Tezuka | Original Story |
