You've finally reached the Second Sea. It’s a massive jump in difficulty. You’re likely rocking a decent fruit, maybe Light or Magma, and you're starting to realize that standard attacks just aren't cutting it anymore. This is where everyone starts hunting for the Mysterious Scientist in Blox Fruits. He isn't just some random NPC tucked away for lore; he is the literal gatekeeper to the Raid system, which is the only way you’re going to "Awaken" your fruit and unlock those high-tier, screen-clearing abilities.
Honestly, finding him the first time is a pain if you don't know the layout of Hot and Cold. Most players just wander around the snowy side or get burned in the lava, missing the lab entirely.
Where is the Mysterious Scientist?
He’s hiding. Specifically, you need to head to the Hot and Cold island in the Second Sea. This island is split down the middle—one side is literally freezing, and the other is a volcanic wasteland. You want to head to the "Cold" side.
Look for the large laboratory building. It’s the one with the giant screens inside. But here is the catch: you can’t just talk to him through a door. You have to solve a color-coded puzzle on the monitors in the main lab area. You'll see four screens. To unlock the secret passage to the Mysterious Scientist, you need to click them until they match a specific sequence: Red, Blue, Green, Blue.
Once you get that right, a secret panel opens up on the wall to your left. Jump in, climb the ladder, and there he is. A guy in a hazmat suit standing in a dark room. It feels a bit sketchy, but he's the most important NPC for your mid-game progression.
Requirements to Talk to Him
Don't just rush there at level 700. He won't talk to you. Well, he will, but he’ll basically tell you to go away.
To actually buy a Raid Chip from the Mysterious Scientist, you must be at least Level 1100. If you are below that level, you can still participate in a raid if someone else hosts it, but you can’t be the one to start it. It’s a common mistake. People spend twenty minutes traveling across the sea only to realize they’re 50 levels short.
The Cost of Doing Business
The Scientist doesn't work for free. To get a Physical Microchip (which lets you start a Raid), you have two options:
- Beli: You can pay 100,000 Beli. This is the standard way to do it.
- Fruit: You can trade any physical fruit from your inventory.
Most veteran players will tell you to never waste 100k Beli if you have a "trash" fruit like Rocket or Spin sitting in your inventory. Use those instead. Also, keep in mind there is a two-hour cooldown if you buy a chip with Beli. If you're impatient and want to raid back-to-back, you have to trade fruits for every subsequent chip until that timer resets.
Why You Actually Need This Guy
The Mysterious Scientist is the only bridge to the Raid dimension. When you buy a chip, you stand on the yellow platform in that secret room, press the button, and you’re teleported.
Why bother? Fragments. Fragments are the secondary currency in Blox Fruits, and you need thousands of them. After you beat a raid, you get teleported to an even more mysterious entity (often called the Awakening Scientist or just the entity) who lets you spend those fragments to upgrade your fruit moves. Your "Z" move might cost 500 fragments, but by the time you're trying to awaken your "V" move or a transformation, you’re looking at 4,000 or 5,000 fragments.
Common Problems and Glitches
Sometimes the door doesn't open. You've clicked Red, Blue, Green, Blue, and... nothing. Usually, this happens because someone else messed with the screens while you were typing. Reset them all to black and try again.
Another thing: if you lose your Microchip—say you die before starting the raid or your game crashes—the Mysterious Scientist isn't going to give you a refund. He's cold like that. You'll have to wait the two hours or cough up another fruit.
Also, don't confuse him with the guy in the Third Sea. In the Third Sea, near the Castle on the Sea, there’s a different setup for raids, but the Second Sea lab remains the "classic" hub for most fruit awakenings like Buddha, Flame, and Ice.
Advanced Tactics: The Buddha Strategy
If you're visiting the Mysterious Scientist to start a Buddha raid, be prepared. It is widely considered one of the hardest raids because the NPCs have long-range reach and high damage. Most players use a "carry" service—basically finding a high-level player with a fully awakened Buddha or Kitusne fruit to do the heavy lifting while the lower-level player stays safe.
If you're the one hosting, stay in the back. If the host dies, the raid ends for everyone.
What Most People Get Wrong
A big misconception is that the Scientist is only for "Fruit Awakenings." While that's the main draw, raids are also the most efficient way to grind levels for your fighting styles. If you're trying to get Superhuman or Death Step, you need Fragments for those too. The Scientist is essentially the ATM of the Second Sea.
Another tip: if you are trying to get the Law Raid (Order), the Mysterious Scientist isn't your guy. For that, you need to go to the side of the lab building and find a different secret area to buy the "Core Brain" or a separate chip for 1,000 fragments. It's confusing because they're in the same building, but the mechanics are different.
Final Action Steps for Players
To make the most of your encounter with the Mysterious Scientist, follow this workflow:
- Check your level first. Ensure you are 1100+ before trying to host, otherwise, bring a friend who is.
- Clear your inventory. Grab those low-value fruits (Spin, Spring, Smoke) from your chest so you don't have to spend your hard-earned Beli.
- Set your Spawn. Set your home point at the Kingdom of Rose or the Cafe. It’s a bit of a flight to Hot and Cold, but you’ll want a central hub to return to if things go south.
- Memorize the code. Red, Blue, Green, Blue. Write it down if you have to, but after the tenth time, it’ll be muscle memory.
- Farm Fragments early. Don't wait until you have a new fruit to start raiding. Keep a stockpile of at least 10,000 fragments so when you finally roll a Dough or a Phoenix, you can awaken it instantly without grinding for days.
The path to the end-game in Blox Fruits runs directly through that secret lab room. Master the puzzle, manage your fruit inventory for chips, and you'll have a fully awakened build much faster than the average player.