Let's be real for a second. When Sonic Frontiers first launched, the ending was... a choice. You spent hours platforming across massive islands, collecting Chaos Emeralds, and vibing to some of the best boss music in gaming history, only to reach the Sonic Frontiers final boss and find a glorified game of Galaga. It was jarring. People were confused. Honestly, the original fight against The End felt like a placeholder for a much bigger idea that Sega just couldn't finish in time for release.
But then came The Final Horizon.
Sega did something rare. They looked at the feedback, realized the climax was lacking that "Super Sonic" punch, and basically rewrote the entire final act of the game. If you’re playing the game today, you aren't just looking at one boss; you're looking at a massive redemption arc for Sonic Team. There's a huge difference between the "Supreme" fight from the 2022 launch and the multi-stage, high-octane gauntlet added in the free DLC.
The Original Disappointment: Supreme and the Bullet Hell
In the base game, the journey ends on Ouranos Island. After you take down the three previous Titans—Giganto, Wyvern, and Knight—you face Supreme. On paper, Supreme should be the peak. It’s a white-and-gold version of Giganto, floating in a field of red flowers. It looks incredible.
The reality? It was way too easy.
Most players who had leveled up Sonic's stats even a little bit found they could basically mash the attack button and win in about two minutes. Supreme barely had any unique mechanics compared to the earlier Titans. Once Supreme fell, the "true" Sonic Frontiers final boss appeared: The End. But instead of a physical fight, the game shifted into a 2D top-down shooter.
Imagine spending 20 hours mastering 3D combat and parrying, only to have the finale turn into an arcade shooter from the 80s. It wasn't "bad" per se—the dialogue from The End was actually pretty chilling—but it lacked the cinematic scale fans expected. The End spoke about being an ancient force of entropy, a void that had consumed countless worlds. It was a cosmic horror story told through a purple moon-shaped entity. Cool lore, but the gameplay didn't match the stakes.
How The Final Horizon Fixed the Climax
Everything changed with the Final Horizon update. If you want the "real" experience, you have to play this. It isn't just a harder version of the old fight; it is a complete mechanical overhaul.
Instead of just Sonic, you get to play as Amy, Knuckles, and Tails leading up to the end. But the star of the show is the new version of the Sonic Frontiers final boss. To even get to it, you have to complete a series of brutal trials that test your mastery of the game’s movement. Then, you face a new version of Supreme that actually fights back.
The New Mechanics
The revamped boss fight introduces "Perfect Parries." In the base game, you could just hold the parry buttons and be invincible. In the final DLC boss, you have to time it to the millisecond. If you mess up, you lose rings. Since rings are your "timer" in Super Sonic form, a few mistakes mean instant game over.
- Cyber Powered Sonic: This isn't just Super Sonic anymore. Sonic taps into the Cyber Space energy of the Starfall Islands, giving him a blue-tinted aura and insane new moves.
- The "Grand Slam": During the fight against the reconstructed Supreme, you have to target specific parts of the Titan’s body—specifically the cable connecting it to the moon.
- The Final Confrontation: Instead of a 2D shooter, you get a cinematic 3D brawl. Sonic literally throws a moon. He uses his friends' powers. It feels like a Dragon Ball Z finale, which is exactly what a Sonic game should be.
The difficulty spike is legendary. Some fans complained it was too hard, but after the cakewalk of the original ending, it felt like a fair trade. You actually have to think. You have to dodge. You have to manage your stamina and your ring count.
What Is "The End" Exactly?
The lore behind the Sonic Frontiers final boss is surprisingly deep for a series about a blue hedgehog. Throughout the game, you hear a mysterious voice. That’s The End. It’s not a person or a robot; it is a sentient celestial entity that represents the inevitable heat death of the universe.
According to the memory tokens and the script by Ian Flynn (the longtime Sonic comic writer), The End followed the Ancients—the ancestors of Chaos from Sonic Adventure—across the stars. It destroyed their home planet and followed them to Earth. The Titans weren't built to fight Sonic; they were built by the Ancients as a last-ditch effort to seal The End away in Cyber Space.
When Sonic defeats the Titans, he’s accidentally weakening the seal. By the time you reach the final boss, you are basically cleaning up a mess that’s been brewing for thousands of years.
Why the Voice Acting Matters
One of the coolest details about this boss is the way it talks to you. In the Japanese version, the voice is often more mechanical, but in the English version, it's a booming, arrogant deity. It mocks Sonic’s mortality. It calls his efforts "finite." It makes the fight feel personal. When you finally land that last hit in the Final Horizon version, it feels like a victory for life over nothingness.
Strategy for Beating the Revamped Final Boss
If you’re struggling with the new Sonic Frontiers final boss, you aren't alone. It’s a nightmare if you aren't prepared. Here is the reality: your stats matter, but your reflexes matter more.
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- Max your Rings: Before entering the final portal on Ouranos, make sure you've talked to Elder Koco and maxed out your ring capacity. You need every second you can get.
- Master the Quick Cyloop: In the new boss fight, you can’t just punch your way through. You need to use the Quick Cyloop to break the boss’s guard. If you haven't mastered the shortcut for this (tapping the button during a combo), go practice on some world enemies first.
- Watch the Camera: The camera in the final fight can be a bit wonky when Supreme starts flying around. Don't spam the dash button. Wait for the visual cue—usually a flash of light—to dodge or parry.
- The Cable is Key: In the second phase, don't just hit the head. Look for the power cable. If you don't disconnect that, the boss will just keep regenerating health.
The music during this fight, "I'm Here - Re-Edit," is a masterpiece. It builds as the phases progress. Listen for the beat drops; they often signal a change in the boss’s attack pattern. It's a rhythmic fight as much as a mechanical one.
The Cultural Impact of the Boss Redo
We don't see this often in gaming. Usually, if a boss is bad, it stays bad. Sega’s decision to fix the Sonic Frontiers final boss via The Final Horizon DLC set a new precedent for the franchise. It showed that Sonic Team was actually listening to the "hardcore" fans who wanted more challenge and more cinematic flair.
It also bridged the gap between the old Sonic and the new. The fight incorporates elements from the entire history of the series—Tails’ tech, Knuckles’ strength, Amy’s heart—and puts them all into one final push. It made Frontiers feel like a complete package rather than a collection of great ideas that didn't quite land.
Final Steps for Completionists
Once you've conquered the Sonic Frontiers final boss, there are a few things you should do to truly "finish" the game.
Check your map for any missed "Cyberspace Challenge" times. Beating the boss on Extreme difficulty unlocks a special star on your save file, which is the ultimate bragging right in the community. Also, go back and watch the "true" ending cutscene in the theater mode. If you beat the game via the Final Horizon path, the ending cinematics are different and provide a much clearer setup for wherever the series is going next.
If you haven't touched the DLC yet, go to the portal on Ouranos Island. It's marked with a different icon than the main story path. Be prepared for a steep climb in difficulty, but the payoff—the real fight against The End—is worth the frustration.