South Island

South Island (サウスアイランド Sausu Airando?) is a location that appears in the Sonic the Hedgehog series. It is an island that is known to be a treasure trove of gems and ancient ruins, that supposedly shifts along the water due to some connection to the Chaos Emeralds.

## Overview

### Inhabitants

* Mobini
* Sonic the Hedgehog
* Manic the Hedgehog
* Sonia the Hedhehog

### Visitors

* Amy Rose
* Avatar
* Bark the Polar Bear
* Bean the Dynamite
* Dr. Eggman
* Espio the Chameleon
* Fang the Sniper
* Hard Boiled Heavies
* Honey the Cat
* Infinite
* Knuckles the Echidna
* Metal Sonic
* Mighty the Armadillo
* Miles "Tails" Prower
* Ray the Flying Squirrel

## Contents

* 1Description
* 2History
	+ 2.1Death Egg saga
		- 2.1.1Sonic the Hedgehog (1991)
	+ 2.2Sonic the Hedgehog 2 (8-bit)
	+ 2.3Sonic Chaos
	+ 2.4Sonic the Hedgehog Triple Trouble
	+ 2.5Sonic Labyrinth
	+ 2.6Sonic the Fighters
	+ 2.7Sonic Blast
	+ 2.8Sonic Generations
	+ 2.9Sonic Runners Adventure
	+ 2.10Sonic Mania
	+ 2.11Sonic Forces
	+ 2.12Sonic Mania Plus
* 3Other game appearances
	+ 3.2 Sonic Battle
	+ 3.3 Sonic Frontiers
* 4Points of interest
* Trivia
* 7Gallery
* 8References

## Description

South Island is a piece of land that floats over a rich ocean. Described as a peaceful and beautiful island, South Island is a paradise blessed with abundant nature. Its fauna is mainly composed of non-anthropomorphic Mobini. Its flora, however, is much more diverse and abstract; one area in particular holds many kinds of flowers that move, almost as if they were dancing, alongside tall palm trees with spiked coconuts. Topographically, South Island's terrain quickly elevates from south to north, with the southern regions being plateau-like and very low in altitude compared to the northern areas, which hold massive mountains, jungles, and huge waterfalls. The island also has a lake archipelago that flows from the northern mountains to the south east of the island, with many tall islets found on it. Despite its abundance in nature, South Island also holds many artificial territories, which include large metropolises and massive industrial complexes. Additionally, it is a treasure trove of ancient ruins, with several locations holding temples.

Many legends claim that South Island has had connections with the Chaos Emeralds since ancient times, though the accuracy of such affirmations cannot be guaranteed. Such mythos also say that the island creates distortions that cause the Emeralds to exist and that it floats thanks to Chaos Emerald energy; as a result, if at least one Emerald gets stolen, South Island will eventually sink into the sea unless all the Emeralds are reunited.

## History

### Death Egg saga

#### Sonic the Hedgehog (1991)

In the 16-bit version of Sonic the Hedgehog (1991), and its numerous ports and remasters, the evil Dr. Ivo Robotnik arrived on South Island with his army to get the Chaos Emeralds spoken of in the legends surrounding the island to power out his empire with. Setting up a huge fortress on the corner of South Island, the doctor began his hunt for the Emeralds, even if he had to tear the whole island up to find them.

As the local Mobini on South Island started to mysteriously disappear, Sonic the Hedgehog rushed to the island upon learning of Robotnik's operations. There, he encountered the doctor, who revealed that he was kidnapping the Mobini in order to use them to power his Badniks. To stop his nemesis, the hedgehog embarked on a journey across South Island to secure the Chaos Emeralds. As he traveled through the various Zones on the island, he was able to gather the six Emeralds, defeat Robotnik in several encounters, and free the Mobini from the Badniks. Eventually, Sonic infiltrated Scrap Brain, the doctor's stronghold, where he triumphed over his final weapon. As Robotnik attempted to escape however, Sonic made his Egg Mobile crash with the doctor in it.

With South Island saved, Sonic went back to Green Hill, where he reunited with the various Mobini as they celebrated his victory over Robotnik. Amidst this, the Chaos Emeralds' power filled the Zone with flowers.

### Sonic the Hedgehog 2 (8-bit)

In Sonic the Hedgehog 2 (8-bit), Dr. Robotnik returned and kidnapped all South Island's inhabitants, along with Miles "Tails" Prower, demanding a ransom of six Chaos Emeralds to return them. Upon discovering this, Sonic went out to stop the doctor once again. After the hedgehog successfully defeated the villain on the island, Tails was freed from captivity.

### Sonic Chaos

In Sonic Chaos, Dr. Robotnik stole one of the Chaos Emeralds on South Island. As a result, the rest of the Emeralds became unbalanced, causing South Island to slowly sink into the ocean. However, Sonic and Tails managed to recover all the Emeralds and save the island after defeating Robotnik.

### Sonic the Hedgehog Triple Trouble

In Sonic the Hedgehog Triple Trouble, the Chaos Emeralds were stolen from South Island by Dr. Robotnik once again, with the intention of using them for an ultimate weapon. However, the scientist ended up losing the Emeralds in an accident, being only able to find one, whereas the rest were stolen by Fang the Hunter, a greedy treasure hunter from subspace. Meanwhile, Sonic and Tails set out to find the remaining gems. During their adventure through South Island, the heroes were confronted by Knuckles the Echidna, who was tricked by Robotnik into thinking that the two were evil. In the end though, the duo took the five Chaos Emeralds from Fang and defeated the doctor, making peace with the echidna when he found out about the truth.

### Sonic Labyrinth

In Sonic Labyrinth, while Sonic was resting somewhere on South Island, his shoes were replaced with Dr. Robotnik's Slow Down Boots, eliminating his super speed. After this success, the doctor quickly began construction on a Super Labyrinth-based Robotnikland nearby and found the Chaos Emeralds. Despite his limited movement, however, the hedgehog broke into this new fortress and claimed the Emeralds to get rid of the fake boots while his nemesis escaped.

### Sonic the Fighters

Main article: South Island (Sonic the Fighters)
In Sonic the Fighters, a section of South Island was used as a fighting arena for a fighting tournament. The arena was set on a small island plateau, in an area that looked mostly like Green Hill, and served as the home field for Knuckles the Echidna. The victor of the fighting tournament fought their first round here in order to earn the right to use the Lunar Fox for a mission to destroy the Death Egg II.

### Sonic Blast

In Sonic Blast, Robotnik's latest floating base, the Silver Castle, threatened South Island, so Sonic and Knuckles resolved to take it down. After gathering all the missing Emerald Shards, the duo was able to make the Silver Castle crash into the ocean.

### Sonic Generations

Main article: Green Hill (Sonic Generations)
In the console/PC version and Nintendo 3DS version of Sonic Generations, as a side-effect of the Time Eater's time-traveling, a past version of South Island's Green Hill got transported to White Space where it was drained of color and life.

After ending up in White Space, Modern Sonic paid a visit to Green Hill. By speeding through Green Hill, Sonic was able to fix space, thereby restoring Green Hill from its lifeless state. When the Time Eater later got destroyed, Green Hill was seemingly return to its rightful place in the timeline on South Island.

### Sonic Runners Adventure

In Sonic Runners Adventure, South Island was the location Sonic traveled to after hearing from Tails that Dr. Eggman was causing trouble there. After finding Tails, Sonic put a stop to Eggman's plans on the island before following Eggman off the island.

### Sonic Mania

In Sonic Mania, sometime after the Angel Island incident, Sonic, Tails, Knuckles and the Hard Boiled Heavies got warped to South Island's Green Hill after the Hard Boiled Heavies unearthed the Phantom Ruby. Having gained free will and updates forms during the warp, the Hard Boiled Heavies fled with the Phantom Ruby, prompting Sonic and his friends to go after them. Along the way, the heroic trio got ambushed by Dr. Eggman and his Death Egg Robot. After being defeated by the heroes though, the doctor managed to forcefully obtain the Phantom Ruby from the Hard Boiled Heavies, which he used to sent his nemeses to the Chemical Plant.

### Sonic Forces

In Sonic Forces, South Island's Green Hill, as well as the locations within it, got changed for the worse by Dr. Eggman's industrial projects. Because of Eggman, the area would undergo heavy desertification, causing Sandworms to infest the area.

Shortly before the War to Take Back the Planet, Sonic took a trip through Green Hill before being called in to defend the City. When Eggman later seized control over the globe, he conquered South Island as well. However, thanks to the efforts of the Resistance, the Eggman Army eventually withdrew from the area.

### Sonic Mania Plus

In Sonic Mania Plus, Sonic, Mighty/Ray and the Hard Boiled Heavies got warped to South Island's Green Hill after the broken-down Hard Boiled Heavies received the Phantom Ruby from the Heavy Magician. Having been rejuvenated during the warp, the Hard Boiled Heavies fled with the Phantom Ruby. prompting Sonic and his companion to team up with their other friends and go after the gang of robots. Along the way, the heroes got ambushed by Dr. Eggman and his Death Egg Robot. After being defeated by Sonic and his friends though, the doctor managed to take the Phantom Ruby from the Hard Boiled Heavies, which he used to send his nemeses to the Chemical Plant.

### Sonic Frontiers

In Sonic Frontiers, South Island was mentioned by Dr. Eggman in his Egg Memos, while he was temporarily trapped in Cyber Space, about how he found recreations of the aforementioned island, West Side Island and Angel Island in the dimension.

## Points of interest

* Aqua Lake
* Blue Marine
* Bridge
* Crystal Egg
* Electric Egg
* Gigalopolis
* Gimmick Mountain
* Great Turquoise
* Green Hill
	+ Arsenal Pyramid
	+ Hedgehog's Pass
	+ Guardian Rock
	+ Lost Valley
* Green Hills
* Jungle
* Labyrinth
* Marble
* Mecha Green Hill
* Meta Junglira
* Red Volcano
* Scrambled Egg
* Scrap Brain
* Sky High
* Spring Yard
* Sunset Park
* Super Labyrinth/Robotnikland
* Star Light
* Tidal Plant
* Turquoise Hill
* Under Ground
* Yellow Desert

## Trivia

* In Sonic Forces, one can see on the world map that Green Hill covers a significant part of the island, leaving no room for the other zones depicted in other Sonic games. However, this is likely due to presentation reasons and is not intended to be an accurate map of earth, much like how the continents in Sonic Unleashed do not match up with world maps from previous games.