!! '''Main Card Battlers'''
!!!'''Hajime Hinobori'''
->Voiced by: Mana Hirata
The protagonist, and a red card battler. He's crazy for seasoned rice and Battle Spirits. His parents created the battle system to fulfill his dream of meeting the spirits.
* AnimeHair: A pretty impossible hairdo. He manages to have a point of hair that stands straight up.
* ChasteHero: Roller Izumi making moves on him does nothing for him, and when asked who he was in love with, his answer... [[CargoShip Battle Spirits]].
* {{Hachimaki}}: Tegamaru just refers to him by it.
* HotBlooded: Extremely. He has a tendency to yell "I'm heating up!"
* FlungClothing: His clothes come off as he's sliding, starting with his shirt.
* MrFanservice: His ShirtlessScene in episode 12. His chest is given lots of focus for that minute and hes 13! Clearly the animators were having a good time at this.
* MeaningfulName: It means begin. He was the first one to use the new battle system.
* NiceHat: His headband never comes off at all, not even when his shirt came off.
* ShirtlessScene: As he falling down a slide in the HotSpringsEpisode, his shirt flies up and he is shirtless for a whole minute.
* TrademarkFavoriteFood: Seasoned rice. With lots and lots of bizarre seasonings, at that.

!!!'''Kimari Tatsumi'''
->Voiced by: Creator/SakiFujita
A friend of Hajime's and the daughter of the co-creator of the battle system. She's a purple card battler, and dreams of world domination.
* ActionGirl: She's a pretty decent card battler, [[spoiler: who made it up to the national round of the world tournament.]]
* AttentionWhore: She likes to be the center of everyone's attention. How else can she accomplish world domination?
* BitchInSheepsClothing: She borders on this at times, such as in the election episode, where she pretends to be the sweet and innocent victim. However, other times she'll have hidden niceness under her behavior.
* HairDecorations: One giant bow
* PetTheDog: Does this with [[StalkerWithACrush Tameru]] of all people. [[spoiler: She allows him to keep calling her princess, even after he lost a battle where the terms would permanently stop him from doing so.]]
* TakeOverTheWorld: It's her main goal in life. Even though she's portrayed as a good guy.

!!!'''Tegamaru Tanashi'''
->Voiced by: Creator/JunFukuyama
A red card battler, like Hajime. He's extremely talented, and will only battle opponents he deems worthy. Hajime considers him a main rival.
* TheAce: He's a very talented card battler, said to be able to use any card that comes to him, and famous for not budging when he loses a life. No one is even allowed to battle him unless they can beat his two teammates first.
* FingerlessGloves
* {{Jerkass}}: For starters, he won't even call anyone by their name if he doesn't consider them worthy.
* IdenticalGrandson: He may as well be a clone of his ancestor Haomaru.
* [[spoiler: PowerHigh: After getting Amaterasu-Dragon, the legendary phantom card, well.. who knew he could be that insane?]]
* TheRival: To Hajime.
* SamuraiPonytail: The old-fashioned look is due to the fact that his heritage is important to him.
* SlipknotPonytail: His hair comes down after [[spoiler: Hajime breaks his imposing stance]]
* TrademarkFavoriteFood: Milk. He loves it to almost creepy levels.
* VocalEvolution: In very early episodes his voice is noticeably more normal sounding, and gets progressively deeper and hammier in later episodes. [[spoiler: Might be justified, as Tegamaru becomes pretty insane later into the series.]]
* YouGottaHaveBlueHair: In fact, it is blue. Which is odd because most other hair is normal in this show.

!!!'''Chihiro Kusaka'''
->Voiced by: FumieMizusawa
A teammate of Tegamaru, and a white card battler. He loves to draw, and wants to become a spirit designer.
* {{Bishounen}}: He's referred to as this in his official bio. Which doesn't stop people from guessing [[spoiler: correctly]], that he's actually a girl.
* CryCute: The normally stoic Chihiro cries after [[spoiler: finally realizing that Tegamaru has abandoned his team.]]
* InstantFanclub: The Chihiro Elite Guard
* NiceHat: [[spoiler: Which also serves the purpose of hiding her long hair.]]
* ShipTease: Might have a crush on Tegamaru, if a lot of blushing is enough indication. [[spoiler: Even her parents [[ShipperOnDeck seem to like the idea of hooking them up.]] ]]

!!!'''Kobushi Nigiri'''
->Voiced by: Kenichirou Matsuda
A teammate of Tegamaru, and a green card battler.
* TheBully: [[spoiler: A former one, when he went around battling weak opponent's to win their strongest card.]]
* CantCatchUp: Subverted. While early on, he's eliminated in the local tournament, and then is not seen battling for a long while after, he later proves to still be quite competent as a card battler, when he defeats a deck made up of [[spoiler: the 12 Zodiac X-Rares.]]
* MeaningfulName: It means clenched fists, fitting to his tough-guy appearance.

!!!'''Manabu Ooizumi'''
->Voiced by: Tadashi Mutou
The narcissistic student council president of Kadode Middle School. He's a blue card battler.
* LargeHam: He probably out-trumps most characters in the franchise with the battle performances he puts on.
* StudentCouncilPresident: Though, we don't get to see a lot of what he does as president. We know he at least has the power to call students to his office at whim, just to talk with them.

!! '''Other'''
!!!'''Arata Yakushiji'''
->Voiced by: Creator/WataruHatano
The Battle Spirits champion. He uses red, and plans to challenge the winner of the Hero Championship. He has an alternate persona called Afrone.
* HotBlooded: He's always loud and passionate.
* SecretIdentity: Afrone

!!!'''Kouta Tatsumi'''
->Voiced by: Creator/ReikoTakagi
Kimari's younger brother, and a card collector. He's Hajime's biggest fan, and loves Pentans.
* EverythingsBetterWithPenguins: As a Pentan lover, he certainly thinks so.
* {{Expy}}: Possibly of Koutaro from BattleSpiritsShonenGekihaDan. Similar names, and they're both Pentan crazy.

!!!'''Kataru Ooizumi'''
->Voiced by: Mika Matsuoka
Manabu's younger brother, who completely adores Manabu. He's usually seen eating junk food. He uses yellow.
* BigBrotherWorship: Towards Manabu.
* BlushSticker: Permanent ones
* DisguisedInDrag: He does this towards the end of the series [[spoiler: as part of the plot to get Tegamaru to come back and battle Hajime]]. However, he considers crossdressing a hobby anyway.
* [[MySisterIsOffLimits My Brother Is Off Limits]]: He becomes hostile of anyone who wants to date Manabu.

!!!'''Mika Kisaragi'''
->Voiced by: Creator/MikakoTakahashi
The worker at Battle Spirits shops, and a yellow card battler. She likes to dress up in different costumes.
* CoolBigSis: To Hajime and the other kids
* EverythingsBetterWithPenguins: She's a Pentan user.
* MasterOfDisguise: She constantly disguises herself, and seems to really love costumes.
* ShipTease: With Arata. Their banter feels a lot like flirting, and it was stated that Arata wanted to date her.
* {{Tsundere}}: She's type B toward Arata. Really nice to everyone as long as they're not him.

!!!'''Renard William Ardley'''
->Voiced by: Creator/DaisukeKishio
A talented card battler from Britain, whose dream is to become a guard for the Queen of England. To achieve this, he uses Battle Spirits as training in chivalry. Though he claims to be able to use any color, he is only shown to use purple. His key spirit is The KnightHero Swordius-Arthur.
* DarkIsNotEvil: Uses purple
* KingArthur: His deck's theme is Arthurian knights.
* KnightInShiningArmor: His deck's theme, and what he wants to be.
* NiceGuy: Probably why he's quite chivalrous.