!! '''Main Card Battlers'''
!!!'''Hajime Hinobori'''
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
* ChasteHero
* CrossDressingVoices
* {{Hachimaki}}: Tegamaru just refers to him by it.
* HotBlooded
* 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 HotSpringEpisode , 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'''
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
* HairDecorations: One giant bow
* TakeOverTheWorld: It's her main goal in life. Even though she's portrayed as a good guy.

!!!'''Tegamaru Tanashi'''
A red card battler, like Hajime. He's extremely talented, and will only battle opponents he deems worthy. Hajime considers him a main rival.
* FingerlessGloves
* {{Jerkass}}: For starters, he won't even call anyone by their name if he doesn't consider them worthy.
* [[spoiler: PowerHigh: After getting Amaterasu-Dragon, the legendary phantom card, well.. who knew he could be that insane?]]
* TheRival
* TrademarkFavoriteFood: Milk.
* YouGottaHaveBlueHair: In fact, it is blue. Which is odd because most other hair is normal in this show.

!!!'''Chihiro Kusaka'''
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.
* InstantFanclub: The Chihiro Elite Guard
* NiceHat

!!!'''Kobushi Nigiri'''
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.]]
* MeaningfulName: It means clenched fists, fitting to his tough-guy appearance.

!!!'''Manabu Ooizumi'''
The narcissistic student council president of Kadode Middle School. He's a blue card battler.
* StudentCouncilPresident

!! '''Other'''
!!!'''Arata Yakushiji'''
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
* SecretIdentity: Afrone

!!!'''Kouta Tatsumi'''
Kimari's younger brother, and a card collector. He's Hajime's biggest fan, and loves Pentans.
* CrossDressingVoices
* 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'''
Manabu's younger brother, who completely adores Manabu. He's usually seen eating junk food. He uses yellow.
* BigBrotherWorship: Towards Manabu.
* BlushSticker: Permanent ones
* CrossDressingVoices

!!!'''Mika Kisaragi'''
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
* ShipTease: With Arata
* {{Tsundere}}: She's type B toward Arata

!!!'''Renard William Ardley'''
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
* KingArthur: His deck's theme is Arthurian knights.
* KnightInShiningArmor: His deck's theme, and what he wants to be.
* NiceGuy