#1 - Flood Fight
Season 2 - Episode 6
It's total chaos! Chaos absorbs the 7th Chaos Emerald and starts to destroy Station Square! Now with the Emeralds drained of their power, Sonic & friends must use their friendship to power the Emeralds and Sonic changes to Super Sonic! Will Sonic be able to defeat the mystical sea monster known as Chaos?
#2 - A Fearless Friend
Season 3 - Episode 25
When the giant seed finally reaches the final stage of its metamorphosis and starts sucking the life out of everyone except for Cosmo, she takes the Chaos Emeralds to Eggman, thinking that he'll know what to do. Unfortunately, Dark Oak attacks Cosmo, who drops the Chaos Emeralds into space. Thankfully, they close in on Sonic and Shadow, who use them to transform into Super Sonic and Super Shadow and attack the Metarex seed. But, once they destroy it, they reveal an even smaller planet with a gravitational force that could potentially destroy the whole galaxy! Cosmo feels helpless but her mother, in her mind, assures her that she is the one who will save the galaxy. She then transforms into a new form and becomes determined to stop this once and for all. She flies over to the planet, passes through the gravitational force that neither Super Sonic nor Super Shadow could pass through, and plants herself on top of it. She then becomes a tree, saying that she has now immobilized Dark Oak. She tells Tails to load and fire the Sonic Driver and shoot it at the planet. Everyone is shocked and does not know whether or not to risk saving the galaxy if they're going to kill Cosmo in the process. Tails, however, is very hesitant, but Cosmo re-assures him that her seeds will be spread throughout the galaxy. He then thinks back to all of the good times they've had and their love and, tearfully, fires Super Sonic and Super Shadow at the planet, completely destroying it. Tails and Cosmo, during the ending sequence (which was cut from the English dub), say farwell to each other. At the very end as Cosmo floats off, she says "I love you."
#3 - A Robot Rebels
Season 2 - Episode 3
After Amy's kidnapping, Sonic & Tails head off in the X Tornado to rescue her. Meanwhile, Knuckles gains most of the Master Emerald pieces and gets another vision of the past. After the vision, Knuckles puts the pieces on the altar and discovers the remaining pieces are in the Egg Carrier. Big & Chris manages to find Froggy, but gets stolen by E-102 Gamma and They sneak into the Egg Carrier. After Gamma's success of getting Froggy, Eggman sends the other E-series into other places and orders Gamma to get the bird that's with Amy. When Gamma confronts Amy, she persuades him to help her escape. Knuckles hitches a ride with Sonic & Tails and battles the Egg Carrier. After getting through the weapons, they enter the Egg Carrier where dangers await them.
#4 - Chaos Emerald Chaos
Season 1 - Episode 4
A Chaos Emerald is found so Chris is determined to get it before Eggman does to show Sonic that he can be a help. But what's in store when Eggman hatches a giant bird robot?
#5 - A Chilling Discovery
Season 3 - Episode 5
With the help of Chris' new program, the Blue Typhoon spots a Chaos Emerald on planet Freezy. Followed by Dr. Eggman's Crimson Egg, the Blue Typhoon approaches planet Freezy, but it's attacked by a Metarex and it crashes on the planet. Sonic, Chris, Knuckles and Cosmo decide to go get the Chaos Emerald with the X-Tornado. Rouge is also on her way for getting the emerald before Sonic. Everybody has to fight Metarex before reaching an ice palace, where the emerald is supposed to be located. Sonic's group find it, but it's sealed in a solid ice block. A more powerful Metarex appears and gets power from the emerald to become even stronger. A fight engages and Cosmo finds the way to defeat it with a laser beam. Knuckles finds the Chaos Emerald but before he gets it, Rouge steals it. However, Tails discovers that the emerald was a fake one.
#6 - Party Hardly
Season 1 - Episode 7
Chris throws a home party inviting his teacher Stuart, his Mom's brother Sam Speed, but Chaos Corrupts when Cream begins thinking about her mom...
#7 - Project: Shadow
Season 2 - Episode 7
After accidentally finding Prof. Gerald's diary, Eggman breaks into the military searching for the ""Ultimate Creature"": Shadow. Thanks to the Egg Mobile, Eggman finds the console & finds an unknown creature...
#8 - Satellite Swindle
Season 1 - Episode 8
Tails builds a X-Tornado 2 while meanwhile Eggman uses a Satellite to turn down all televisons. Tails finishes building it, and then Sonic, Tails, and Chris take it for a Spin to stop Eggman's fortress, and his Satellite.
#9 - The Last Resort
Season 1 - Episode 9
Chris, Tails, Amy, Cream, and Cheese go to the beach, but Sonic stays behind and goes for a run. Amy has day dreams about Sonic on the beach, and decides to make a necklase for her hero, Sonic. Meanwhile Eggman hatches a mischevious plan to ruin the beach, and without Sonic what will they do? Luckily Sonic comes and fights Eggman's huge robot, but almost gets hurt, and Amy isn't too pleased......
#10 - Techno Teacher
Season 1 - Episode 6
Being mad after losing three times, Eggman decides to make a robot named E-51 to go to Chris' school and ruin it. But things turn around when E-51 forgets all about his mission and has fun with the kids!!
#11 - Shadow World
Season 2 - Episode 10
Sonic, Tails, Knuckles & Amy manage to break into Eggman's base, undetected. At least they THINK they've entered undetected. Bokkun finds them & calls on the Egg Golem! They board the space shuttle, but their adventure has just begun...
#12 - Robotnik's Revenge
Season 2 - Episode 11
Sonic, Tails, Knuckles, Amy and Tanaka have arrived at the ARK, but when Robotnik, Rouge and Shadow programme the ARK on a path to oblivion, it's Sonic The Hedgehog to the rescue in outer space!
#13 - Showdown in Space
Season 2 - Episode 12
As the clock ticks for Space Colony Arc's crash, Sonic, Eggman, Bokkun, Dekkun, Knuckles, Tails, and Rouge try to get the Master Emerald to the power source, The Chaos emeralds. Meanwhile, Shadow is faced by Chris, who reminds him of Maria's Wish, to help Mankind. As Sonic, Knuckles and the two robots reach the power source, a recreated temple of Chaos, a robot/organic beast attacks the crew, thinking of a way past, Shadow offers to distract the beast long enough to stop the colony. Will they succeed? Watch and find out!
#14 - H2Whoa
Season 3 - Episode 3
The Blue Typhoon is now on its way to a new adventure. Knuckles thinks that a Chaos emerald is nearby due to the Master Emerald's reactions. A planet is located and according to Sonic's guidebook, this is a dry planet. However, they find out that it's covered by water. Accidentally separated of the others, Chris & Sonic arrive to a Metarex base, where several Metarex await them. The fight is engaged, but Chris, wanting to help his friend, is unable to punch a Metarex without hurting himself. Eventually, Sonic is captured and Chris is able to escape. Informing Tails of the situation, Chris wants to rescue Sonic with the X-Tornado, but Tails insists that Chris won't be capable of his own. This leads Chris to question himself about his utility in their mission. Finally, Amy and Tails succeed to rescue Sonic with the X-Tornado, but Metarex attack the plane and by accident, Sonic falls straight toward the water. Chris arrives with another plane and saves Sonic with his own invention: hover shoes. The Metarex are finally defeated, the water retires from the planet and the Dark Blue Chaos Emerald is found.
#15 - Defective Detectives
Season 2 - Episode 13
The Chaotix Detectives made up of Vector the Crocodile, Espio the Chameleon, and Charmy the Bee have arrived in Station Square. Their goal is to find Cream for a specific reason, even when they think Sonic stole her. Meanwhile, Dr. Eggman rebuilds half the moon (after part of it was destroyed last episode) into the Eggmoon and claiming to Sonic that he has become reformed. Is this true? And will the others know why the Chaotix Detectives have come for Cream.
#16 - Mission: Match-Up
Season 3 - Episode 13
The Blue Typhoon encounters the Chaotix ship. Once aboard the Typhoon, Vector and Espio explain that they lost themselves in space and that their radio got broken. Tails agrees to fix their ship and he warns them that he doesn't want any trouble on the Typhoon. Tails begins his work when Cosmo brings him lunch. She reveals that she's planning a surprise for everybody. The Chaotix watch the scene and Vector notices the growing relationship between Tails and Cosmo. In order to thank Tails for fixing his ship, Vector decides to help him winning Cosmo's heart. At the same time, Tails unintentionally discovers Cosmo's surprise : she plans to throw a party on the ship. Cosmo is disappointed because it won't be a surprise for Tails now, but the little fox tells her that she won't be able to prepare everything all by herself. Also on the scene, the Chaotix propose their help and Vector takes it as an opportunity to throw his match-up plans. However, they all fail one by one. Espio believes that their relationship should develop naturally. After finishing the preparations, the Chaotix go get everybody to the party room when they cross Knuckles' path. Knuckles was used against his will in one of Vector's plans and he decides to take his revenge. Accidentally, they end up in the party room and they ruin everything. Arriving on the scene, Tails and Cosmo are disappointed, but Sonic says it's no problem and that they'll put everything back. He also thanks Cosmo for her party idea. The episode ends with Cosmo and Tails watching the stars outside in space.
#17 - That's What Friends are For
Season 1 - Episode 14
After destroying Eggman's base Sonic has become a huge celeberity and the President invites him and his friends to a party but Sonic has promised his new friend Helen that he'd take her to a mountain because her dad never did. Now the president is trying to catch Sonic and take him to the party and Sonic and Helen are on the run!!
#18 - Revenge of the Robot
Season 2 - Episode 5
After the missle attack was prevented, E-102 Gamma deletes master obedience data and heads off. Meanwhile, Amy sets of to find Lilly's brothers. Then, Sonic explores an ancient temple and gets a vision of the past. Then, he fights the Egg viper. Gamma frees Delta, Epsilon, and Zeta. But, Beta tries to destroy him. Can Gamma free Beta?
#19 - Station Break-In
Season 3 - Episode 11
Dr. Eggman discovers that the last two Chaos Emeralds (Cyan and Yellow) are located inside a huge Metarex fortress. The Crimson Egg and the Blue Typhoon arrive on location at the same moment. Eggman suggests Sonic to put their efforts together in order to enter inside the fortress. His plan: a little group will enter first and disconnect the fortress' security system, so the other ones could penetrate. Eggman sends Shadow and Rouge while Chris volunteers to accompany them. They enter with the help of Chaos Control. Rouge tries to get away from Shadow and Chris to get the Chaos Emeralds for herself. She reminds Shadow of the ARK and Maria, which causes Shadow to drop his guard as he has a sort of 'meltdown'. Rouge tries to escape, but is ambused by a Metarex. Shadow saves her and tells her not to run off. Chris finds the control room and they succeed in their job. Sonic & Knuckles penetrate in the fortress aboard the X-Tornado, Amy & Cosmo follow them and Eggman, Bocoe & Decoe are right behind. However, Eggman secretly installed a special device on each ship and he can take control of Sonic and Amy's ships. Eggman almost succeeds, but Sonic finds the emeralds first. The only thing: he is welcomed by an entire army of Metarex, led by Dark Oak, the Metarex leader, and the battle is about to begin.
#20 - Cracking Knuckles
Season 1 - Episode 5
Eggman tricks Knuckles by saying that Sonic was the one that sent them to the new world. Now Knuckles is more furious then ever to destroy Sonic, and they have an ultimate clash.....or is everything Eggman said just a fake?
#21 - Teasing Time
Season 3 - Episode 15
Sonic and friends come across a barren planet with 500 Chaos Emerald signals coming from it. Black Narcissus is inside, and sends a message to the Typhoon, a message that only Cosmo can understand. He then sets off fireworks, allowing Cosmo to escape to the planet undetected. Unexpectedly, Chris follows, but Narcissus captures both him and Cosmo. When Chris tries to escape with Cosmo, Chris is attacked and stabbed (knocked out in the English version). Sonic comes to rescue them and is horrified by their predicament, but because the Chaos Emeralds they detected were fake, Sonic draws upon their negative energies and becomes Dark Super Sonic. Dark Super Sonic then proceeds to destroy two Metarex robots Narcissus had prepared just for him for an "experiment" (Gold for strength and Silver for speed). Suddenly, Eggman appears and has Decoe and Bocoe hold Narcissus down while Bokkun kicks him, dealing some damage. Chris and Cosmo are saved by Shadow while Rouge destroys the machine that makes the fake Chaos Emeralds. Sonic and his friends then go back to the Blue Typhoon and Eggman talks to Black Narcissus about what's happened.
#22 - A Revolutionary Tale
Season 3 - Episode 16
While traveling through space, Dr. Eggman and his forces come across a group of humans battling the armada of Pale Bay Leaf. The two groups talk, and Shadow and Rouge get to know a human girl named Molly. After seeing Shadow in battle, Molly comes to believe that Shadow is a hero of folklore named Black Wind. Shadow, Rouge and Molly infiltrate an old factory where they find the White Chaos Emerald. Eggman is then taken prisoner by the humans, revealing that they have made a deal with the Metarex. Molly flees in shame*, while Shadow uses the Chaos Emerald to devastate the Metarex forces. Despite the damage, Pale Bay Leaf survives, and communicates with Dr. Eggman.
#23 - The Sewer Search
Season 2 - Episode 18
Stewart keeps a close eye on Eggman. Unfortunetly for him, Chris, Helen, Danny, Cream, Cheese, and Emerl stick with Stewart for the ride. When they are all captured by Eggman, they must try to find a way out, or at least figure a way to contact Sonic to help...
#24 - Sonic's Scream Test
Season 1 - Episode 19
Chris' mom is doing part of a play in an old castle. While Sonic is walking in the castle, all of the sudden, everything shakes all of the sudden. During the night when Lindsay is putting on her makeup, the mirror all of the sudden takes her alive. The gang goes about looking for her, when all of the sudden Ella is sucked into a wall. When trying to rescue her, Sonic and Tails are sucked in as well. Amy and Chris try and rescue everyone. They figure out that a stone has something to do with this.
#25 - Little Chao Lost
Season 1 - Episode 22
While exploring Tanaka's mountainous homeland, Cream and Cheese decide to take a swim. However Cheese is carelessly swept away down the river by a strong current, and the gang has to find him. When they reach the spot where they find Cheese, it's a beautiful, crisp lake inhabited by many chao that have been transported here as well. The gang begins to enjoy the company when unfortunately, Dr. Eggman is taking a hike too; and he plans to ruin the vacation!