!The Mystic Knights:

!!'''[[color:red:Rohan, Mystic Knight of Fire]]'''
An orphan raised as Cathbad's apprentice before learning he was the long-awaited [[TheChosenOne Chosen One]] Draganta, making him the leader by default. He is the only one who can control Pyre, the Dragon of Dare, whom he summons with the Dragon's Breath Dagger. Rohan revealed in one episode his heart's desire is to know who and where his real family is. BeCarefulWhatYouWishFor...
** Element: Fire
** Mystic Weapon: [[HeroesPreferSwords The Sword of Kells]], a sword that shoots flames

* {{Adorkable}}
* {{Determinator}}
* FourTemperamentEnsemble: Choleric (fire).
* [[spoiler: HiddenBackupPrince]]: [[spoiler: Since he's Meave's son after all.]]
* LawOfChromaticSuperiority: His "Battle Fury" armor.
* PlayingWithFire
* StandardizedLeader
* [[spoiler: RoyalsWhoActuallyDoSomething]]: Though of he course he doesn't realize he is this until near the end of the series.
* [[spoiler: WarriorPrince]]
!!'''[[color:goldenrod:Angus, Mystic Knight of Earth]]'''
Rohan's best friend and roommate. The two grew up on the streets together, and Angus was -- and still is -- the troublemaker. Rohan trusts him unquestionably ([[ThePowerOfFriendship the power of their friendship]] was once enough to free Rohan from a spell), despite his reputation as a {{trickster}} and pickpocket. His skills in that area frequently come in handy.
** Element: Earth
** Mystic Weapon: [[EpicFlail Terra Mace]], a mace that shoots large boulders and creates earthquakes

* ButtMonkey
* DishingOutDirt
* TheEveryman: [[spoiler: especially since he turns out to be the only one of the knights not to be royalty in any way/]]
* FourTemperamentEnsemble: Melancholic (earth).
* HeterosexualLifePartners: With Rohan.
* TheLancer
* LovableRogue: He'd like to think so; in reality, not so much.
* PluckyComicRelief: Always has a joke, or is the butt of one.
* ReformedCriminal

!!'''[[color:silver:Deirdre, Mystic Knight of Air]]'''

The RebelliousPrincess of Kells, who finds herself a habitual blackmail tool. In the finale, it took all of one minute for Maeve to grab her and the knights to sulkily abandon their weapons as if it had become routine, which it had. Fortunately, [[FauxActionGirl no one in her world seemed to notice]], anymore than they were bothered by her tendency to pull rank whenever she wanted to get her way. ("That's a royal command.")
** Element: Air
** Mystic Weapon: Whirlwind Crossbow, a crossbow that shoots strong blasts of air

* BadassPrincess
* BlowYouAway
* TheChick
* CuteBruiser
* FauxActionGirl
* FieryRedhead: She can get even more choleric than Rohan.
* FourTemperamentEnsemble: Sanguine (air).
* HugeGuyTinyGirl: Compared to the rest of TheTeam, she's rather short.
* LadyOfWar
* RoyalsWhoActuallyDoSomething
* TheSmurfettePrinciple: Within the Knights.

!!'''[[color:blue:Ivar, Mystic Knight of Water]]'''
A prince who was passing through Kells on the hunt for a thief who stole a priceless chalice from his kingdom. He eventually learned that very chalice was located in Maeve's throne room, since it was Midar's portal between Earth and the Dark Fairy Realm. His dedication to retrieving the chalice almost matched his uncanny ability to track anything and everything.
** Element: Water
** Mystic Weapon: [[ProngsOfPoseidon Barbed Trident]], a trident that shoots streams of blue electricity.

* FourTemperamentEnsemble: Phlegmatic (water).
* MakingASplash
* TheQuietOne
* RoyalsWhoActuallyDoSomething: Like Deirdre he comes form a royal family. Unlike Deirdre, he had to travel to another ''country'' in order to retrieve a magical item taken from his people. Now ''that's'' dedicated royalty.
* TheSmartGuy
* TheStoic
* TokenMinority
* WiseBeyondTheirYears

!!'''[[color:green:Prince Garrett, Mystic Knight of the Forest]]'''
A SixthRanger who came to Kells to carry out his betrothal to Deirdre, who instantly shot him down due to his initial severe superiority complex. After a period of fighting the team after being {{Brainwashed}} by Maeve, Cathbad realized he was destined to be the fifth Mystic Knight. Deirdre firmly refused to go through with the marriage, but she tolerated him as a teammate, even giving him a kiss good-bye when he left almost as quickly as he came to escort a stranded princess home.
** Element: Forest
** Mystic Weapon: [[DualWielding Twin]] [[AnAxeToGrind Timber Axes]], which are supposedly "sharp enough to slice a stone in half," but were usually used to shoot energy blasts.

* BrainwashedAndCrazy
* EvilIsHammy: As an evil knight.
* EvilLaugh: Had one when he was evil.
* GreenThumb
* HeelFaceTurn
* PutOnABus: But when TheBusCameBack, he brought back A MechByAnyOtherName.
* RivalTurnedEvil
* SuperPoweredEvilSide: The at first, Maeve's influence gradually wanes until he's finally freed completely and can utilize his powers for good.

!Other characters:

!!King Conchobar
The ruler of Kells and father of Deirdre.

* TheGoodKing
* [[ItsPronouncedTropay It's Pronounced CON-over]]
* ReasonableAuthorityFigure
* RoyalsWhoActuallyDoSomething: When Kells castle is attacked, he sometimes fights with the soldiers in battle.

!!Cathbad
The druid of Kells.

* CoolOldGuy
* {{Druid}}

!!Fin Varra
the fairy king of Tir Na Nog who gave the Mystic Knights their weapons and armor. They frequently came to him for help but more often than not heard FigureItOutYourself, in riddle form.

* AloofAlly: At first, so much so in fact that he made the knights take a TestOfCharacter before he agreed to help.
* TheFairFolk: Their king.
* TheMentor

!!Aideen
A NinjaButterfly (no, seriously) who followed the Knights around, serving as a messenger and spy. She had a crush on Rohan that occasionally caused her to do foolish things, like having Maeve turn her human or accidentally turning Deirdre to stone.

* {{Expy}}: Of [[PeterPan Tinker Bell]].
* FairyCompanion: Who she'd prefer to be TheHero rather than a SideKick.
* OurFairiesAreDifferent

!!Pyre, Dragon of dare
A red dragon who aids the knights in battle when they summon him with their daggers.

* DefeatMeansFriendship: How he had to be obtained
* OurDragonsAreDifferent

!Villians:
!!Maeve
Maeve is the queen of Temra. She believes that being the ruler of Kells is her birthright, so she recruits the help of the dark fairy Mider.


* BadBoss
* BigBad: Of the first season.
* DarkActionGirl: [[FauxActionGirl Unlike Deirdre]], was more than capable of holding her own in a one on one fight, even against [[spoiler: [[TheChosenOne Rohan]]]].
* EvilPlan: The main one is "Conquering Kells". The episodes have smaller ones focused on the MonsterOfTheWeek
* GodSaveUsFromTheQueen
* LargeHam
* MakeMyMonsterGrow: Rarely.
* [[OrcusOnHisThrone Maeve On Her Throne]]/NonActionBigBad: Was usually content to just sit and watch her mooks/monsters fight the knights, [[DarkactionGirl But when she actually fought...]]
* [[spoiler:[[LukeIAmYourFather Rohan, I Am Your Mother]]]]

!!Torc
Queen Maeve's right-hand man. [[spoiler: Before the series started, he was acting as TheMole for Maeve in king Conchobar's court before a young Rohan and Angus uncovered his treachery. He was revealed to be the one who stole Ivar's chalice]].

* BadassBeard
* [[spoiler:DevilInPlainSight]]
* TheDragon

!! Mider

A dark fairy who wishes to take over the fairy kingdom of Tir Na Nog. To reach that goal, he allies with Queen Maeve and grants her the magical power to create monsters.

* BiggerBad: Is more powerful than Maeve and is frequently the one who gives her her potions/monsters.
* BadBoss: Whenever he manages to take charge.
* TheFairFolk: An evil example.
* ThirdPersonPerson
* SmugSnake