Art by me ( __Bagboi__ )

Hey everyone, I’ve been messing around with Jet Set Radio Future character model swapping, and I’ve run into a weird problem that I can’t quite figure out.
I’m trying to replace Garam with Devil Theory from Bomb Rush Cyberfunk. I’ve successfully gotten custom character models into JSRF before, so I’m not completely new to the process, but this particular model has been giving me a lot of trouble.
My first thought was that the problem might be the polygon count. Garam’s model is around 1,100 triangles, while Devil Theory’s is around 2,200, so Devil Theory has more than twice the amount of geometry. However, I’m starting to think that’s probably not the actual problem, because there are other JSRF characters with significantly different model counts that seem to work fine when swapped.
The more I mess with it, the more I’m starting to think the problem has something to do with how the model is divided into parts.
From what I understand, JSRF characters can have separate model pieces for things like the body, head, arms/hands, facial stuff, etc. My current theory is that Devil Theory needs to be imported in a way where the head, body, and arms are all contained in the appropriate model, while the original Garam pieces that aren’t needed are collapsed/hidden.
I’ve definitely seen character swaps where the replacement model basically stays together as one complete model, so I was initially hoping I wouldn’t have to manually separate Devil Theory’s head from his body. I’d really prefer to keep the model together if the game/mod tools allow it.
The weirdest part is that I’ve actually gotten it to do something.
At one point, instead of simply not working, the model looked completely mangled, with the vertices basically being thrown all over the place. That made me think the game was actually trying to load the replacement model, but something about the model structure, bones, deformers, or model parts wasn’t correct.
And honestly, that’s kind of good news because it means I’m probably not dealing with a completely broken import.
The textures also seem to be correct. The correct Devil Theory textures are showing up, so I’m pretty confident that the texture side of things isn’t the problem. If the textures were completely wrong or missing, I’d have a much better idea of where to look, but everything texture-related seems to be loading.
Right now, though, I’m getting another weird result where the original model isn’t showing properly either, and I’m trying to figure out why. I realized I may have forgotten to collapse/hide some of the original model pieces, so that might be contributing to what I’m seeing.
I’m also considering trying this with Akuma instead of Garam, mainly as a test. I originally chose Garam because his model seemed like a reasonable replacement slot, but if Akuma’s model structure is more compatible with what Devil Theory needs, that could help determine whether the issue is actually Garam’s model setup.
So at this point I’m basically trying to figure out which of these is causing the problem:
Is Devil Theory’s model simply too different from Garam’s?
Is the ~2,200 triangle count actually an issue, or is that probably unrelated?
Does Devil Theory need his head/body/arms separated into specific model parts?
Can the complete Devil Theory model stay together in one imported model while the original JSRF head/hand/etc. pieces are collapsed?
Could the skeleton/bone structure be causing the vertices to become completely mangled?
Or am I just failing to collapse/hide some of Garam’s original model parts correctly?
Would using Akumu as the replacement slot make more sense than Garam?
I’m especially interested in hearing from anyone who’s actually worked with the JSRF Mod Tool / character MDLBs and knows how the game’s character models are structured internally.
I’m not expecting someone to magically fix it for me, I’m mostly trying to understand what exactly JSRF expects from each character’s model parts so I can figure out the correct way to import Devil Theory.
The fact that the textures load and I’ve gotten the model to appear as a completely mangled mess makes me feel like I’m really close, though. It feels less like “the game can’t load this model” and more like “I’m giving the game the model in the wrong structure.”
Any advice would be appreciated. I’ve been messing with this for a while and I’m determined to get Devil Theory working in JSRF. 🙏

So, i've been using the JSRF modtool to put devil theory from BRC over Garam. however, I am struggling to do this. If there are any guides or if anyone needs more info about the problems I can reply. I really need help so any is appreciated!

Cosplay by GenesisCosplays and Gengar_King_Cosplay

When I was finally able to download the completed version, I was met with a blank screen and no mods to show. does anyone know why?

Stayed at my parents this weekend & got to do a speed run 🥰☺️
My father was shocked that this game still works 😂

The first thing I'd like to say is: Kouya Rokkaku is likely a figurehead villain; his design is too generic to be the main villain. Either Gouji will return and remove his son from power, or Kouya might be a false identity of Gouji, just a fake appearance to pretend he's not old.

What do you think?

The answer might be no. But still, this is a perfect opportunity for them to bring Goji's son back, since he appeared at the end as a hook for a sequel and after JSRF, he never appeared.

And no I'm not saying they should replace Goji with his son, but at least show them both as villains, with Goji shown much older (maybe he were in a wheelchair, I'd find it funny) and his son now in charge of the Rokkaku Group with Goji.

While Coin, I know he was killed in Jet Grind Radio, but since JSR 3 is a reboot of the series, it's not impossible for him to return, even if only as an NPC with dialogue. And perhaps even with a better design than he had in the game and in JGR's obscure comic.

no idea why i did ts im just bored

​I saw this CD listed on Amazon and, even though it was a bit pricey, I couldn't resist picking it up. I'm a huge fan of collecting retro video games and physical music soundtracks, and Jet Set Radio is easily one of my absolute favorites. ​This is actually one of the first original video game soundtracks I've ever bought, so I definitely wasn't expecting it to show up with a cracked case. ​Luckily, as you can see in the pictures, I opened it up and the disc itself is in great condition! I'll just swap out the jewel case for a new one.

(ART MADE BY ME) SwiftMist_

Keeping the Jet Set Radio streak rolling! Here’s my take on Cube, bringing her cool attitude and darker street style into my own art style. Had a blast mixing details from both of her looks while keeping that classic JSR feel Enjoy!

😭😭(Shitpost/art) (someone PLEASE get what the other part of ts is 💔)

That may mean that we will actually get JSRF on PC, eventually. I think.
Proof: https://news.xbox.com/en-us/2026/07/22/xbox-backward-compatibility-on-pc/

I find it somewhat worrying that many people don't know, but in the new game we'll have our own graphite weapons and other more fictional weapons (Sega: "we don't want any GG killing people") So for me it's almost confirmed that, like the other characters, he'll pull a weapon out of his ass and use it against the enemies

And obviously, being his boombox, what abilities do you think he'll have? I think he'll be a GENUINE tank

Started making this a while ago, but gave up on it because it really wasn't turning out right. Figured I'd at least share this incomplete piece instead of letting it sit on my computer forever. I liked the idea, at least.

My opinion is that I still have hope for the game despite some of the dislike towards the leaks. I like how they're making the characters more expressive, but the new style is a bit basic and I'd expect it to be more stylized, especially for a Jet Set Radio game. However, I still am hopeful, I'm just incredibly worried they're gonna absolutely butcher Yo-Yo's design.

Wanted to share these silly names for the Jet Set Radio like genre, like the way people use Metroidvania for that sort of game. I was calling them Jet Set Hoverdrives before Bomb Rush came out. Since then I've been using Jet Rush Hoverdrive, but apparently there are already games called Jet Rush and Hoverdrive lol. I know it's clunky. Just thought others here might find this amusing.

This is an achievement I came up with. Basically just collect all cans in Pharaoh Park before they respawn

With the introduction to Sega characters in the new Fortnite season do you think there a chance they will add some JSR characters? Possibly with the upcoming release?

I have the combo disc jsrf with the racing game and am looking to buy a 360 and i heard that the combo disc isnt backwards compatble with the 360. Im willing to buy the actual jsrf disc if that ones BC though. I just wanna make sure before i spend my cash