Shirobon is the younger brother of the legendary Bomberman, Mighty. Mighty was the leader of the Jetterz, but with his disappearance, Shirobon was recruited. Shirobon is still just a kid; he's whiny, lazy, and overall seemingly incompetent. However, he has strong feelings for his older brother, and when it comes down to it, he will stop at nothing to find out what happened to him.

After Mighty's disappearance, Shout becomes the leader of the Jetterz. She's bossy, and especially towards Shirobon. On Jetterz Planet, she allows him to live in their house, but only if he helps out in the ramen resturaunt. But no matter how hot-headed she may seem, she still cares about others.

Mighty is a legendary Bomberman and Shirobon's older brother. He's a very mellow, down to earth kind of guy who is seemingly impossible to get angry. Even though he's very laid-back, he takes his duty very seriously and does whatever he can, and more, to finish the job.

Birdy is another guy with a calm and cool personality. He's great friends with Mighty, but when he's gone, Birdy doesn't act like himself. He skips missions and such, many times thinking it is best for him to quit the Jetterz.

Bongo certainly isn't the most literate of the Jetterz, but he's very sweet, hard-working, and loves curry. Despite his lack of expression, he deeply cares for his friends and does his best to help out, even though he can be careless much of the time.

Gangu is a tiny robot with a big, dirty mouth. He spends all of his time around Bongo, and even though he hates being constantly modified by him, they both have deep friendship for each other.

Dr. Iein is an odd little man with an unhealthy obsession over his so-called Momo-chan. He is often self-absorbed, but there are times when he outstretches a hand for others.

Bagura is the creator of the Hige Hige-dan. Although he seems mean and cold-hearted, he does actually have a sensitive side, even though you might not see it right away. He and Dr. Iein were always rivals, dating back to their childhood, when they fought over the same girl.

Mujyou has been with the Hige Hige-dan ever since Bagura invented the very first Hige Hige robot. He is forever loyal to Bagura and obeys his every command. He sacrafices himself without thought in times of desperation, and is very honorable and valiant even if he is part of the Hige Hige-dan.

A rather suspicious man who lacks honesty. Dr. Mechadoc joined the Hige Hige-dan for his own evil intentions. He's brilliant as a scientist, and invented the Combined Bomberman Machine.

These are the robots that Bagura had invented, and they make up the bulk of the Hige Hige-dan. They lack vocabulary, and speak in their own, simple language, which is using the word "hige" (pronounce hig-ee) multiple times.

A mysterious android, recruited to the Hige Hige-dan by Bagura because of his reputation as a great space theif. However, Shirobon notices something about him...

Flame Bomber is the most childish of the Shitennou and doesn't take his work very seriously.

Mermaid Bomber acts more like a spoiled little girl than anything else. She always wants it her way, or else she won't do anything.

Even though part of the Hige Hige-dan, Grand Bomber always does his best to help those in need. He's often very confused, as well, and will follow other people's examples even if he has no idea what he's doing.

Thunder Bomber respects his betters, but has a grudge against MAX because he believes he is trying to frame Mujyou. He is the most powerful of the Shitennou, and the most vengeful as well.

Misty is a space theif and often finds herself getting tied up within the Jetterz and Hige Hige-dan's affairs. She also has relations with Mighty, even.

The grandmother of Shirobon and Mighty. Granny Bomber is very tough on her grandkids (especially Shirobon since he is such a slacker), but she knows it's for their own good for them to get stronger. As a child, Dr. Iein and Bagura constantly tried to impress her, but she didn't truly love either of them.

Zero is an Android who looks almost exactly like MAX, but they are complete opposites. Misty has an odd attachment to him, and has no idea why.

Achou looks identical to Mujyou, so it's not a wonder why they're confused with one another. He is the leader of the Chige Chige-dan, who also look just like the Hige Hige-dan, except they wear pots on their heads.

Nightly keeps a low profile, giving information to those who are willing to pay. He is often seen with Birdy, one of his main clients.

Shirobon is Louie's master, so he's kind of like a pet. He follows Shirobon wherever he goes for the most part, and even though he looks cute, he has quite an attitude.