The BEST episodes of Sonic Underground

Every episode of Sonic Underground ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Sonic Underground!

Sonic, Sonia, and Manic are the children of Queen Aleena Hedgehog, the rightful ruler of Mobius, and are pursued relentlessly by Doctor Robotnik and his bumbling bounty hunters sidekicks, Sleet and Dingo. As infants, the siblings were separated and placed in hiding to fulfill a prophecy made by the Oracle of Delphius that the triplets would grow up to find their estranged mother, overthrow Robotnik, and take their places once more as Mobius' rightful rulers.

Last Updated: 3/18/2024Network: TF1Status: Ended
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Harmony or Something (Origins, Part 3)
star
8.00
5 votes

#1 - Harmony or Something (Origins, Part 3)

Season 1 - Episode 30 - Aired 4/18/1999

Sonic, Sonia and Manic put their training to the test as they embark on a mission to rescue the Oracle from Robotnik! Can they work together in harmony, or will their lacking seal their own doom?

Watch Now:Amazon
Virtual Danger
star
7.83
6 votes

#2 - Virtual Danger

Season 1 - Episode 40 - Aired 5/23/1999

Sonic and Manic are introduced playing "Castle Conquest", a game of virtual reality, in order to enhance their pilot skills. After the two brothers are trapped in the game by Robotnik, it's up to Sonia to play the game to save her brothers.

Watch Now:Amazon
No Hedgehog is an Island (Chaos Emerald Crisis, Part 2)
star
7.80
5 votes

#3 - No Hedgehog is an Island (Chaos Emerald Crisis, Part 2)

Season 1 - Episode 27 - Aired 4/7/1999

After taking off with the Chaos Emerald, Sleet and Dingo have a quibble over it, ending with Dingo accidentally breaking it and unleashing all the chaos energy. The Sonic Underground and Knuckles are off to talk to Knuckles' grandfather Athair for advice on handling the situation. But with all the chaos energy tearing apart the planet, can they survive long enough to make it? And even if they do, will they listen to the wise echidna's words?

Watch Now:Amazon
Beginnings (Origins, Part 1)
star
7.63
65 votes

#4 - Beginnings (Origins, Part 1)

Season 1 - Episode 1 - Aired 4/4/1999

Queen Aleena tells the story of how Dr. Robotnik took over, Mobius, and how she had to give up her children [Manix, Sonia, and Sonic] to help fulfil a prophecy exclaiming that one day, the siblings will be able to rise against Robotnik's rule and restore peace to the planet..

Watch Now:Amazon
New Echidna in Town (Chaos Emerald Crisis, Part 3)
star
7.60
5 votes

#5 - New Echidna in Town (Chaos Emerald Crisis, Part 3)

Season 1 - Episode 29 - Aired 4/14/1999

Knuckles bargains with Robotnik in order to recover and repair the Chaos Emerald before Mobius is destroyed, but to acquire the villain's help, the echidna must betray the Hedgehogs..

Wedding Bell Blues
star
7.50
4 votes

#6 - Wedding Bell Blues

Season 1 - Episode 26 - Aired 1/6/1999

When Robotnik announces he plans to marry Queen Aleena, the shocked sonic siblings race to the rescue, unaware it's a trap..

Watch Now:Amazon
Getting to Know You (Origins, Part 2)
star
7.50
4 votes

#7 - Getting to Know You (Origins, Part 2)

Season 1 - Episode 28 - Aired 4/11/1999

The newly reunited Sonic Siblings must learn to work as a team if they are to do battle with Robotnik. But do they really know each other well enough?

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Six is a Crowd
star
7.43
7 votes

#8 - Six is a Crowd

Season 1 - Episode 24 - Aired 3/28/1999

In this episode, the Sonic Underground go and see the Oracle (again), who sends them to an alternate dimension, where they are the bad guys, and Robotnik is the good guy! But once Robotnik is on their side, they may be able to overthrow the bad hedgehogs and restore Mobotropolis to its former glory!

Watch Now:Amazon
To Catch a Queen
star
7.42
19 votes

#9 - To Catch a Queen

Season 1 - Episode 2 - Aired 1/10/1999

Argus, the former captain of the Queen's guard, arranges a secret meeting with her. But he is soon intercepted by Robotnik's bounty hunters, Sleet and Dingo, who have every intention of feeding the soldier to the roboticizer, the Sonic trio race to the rescue..

Watch Now:Amazon
The Hedgehog in the Iron Mask
star
7.40
5 votes

#10 - The Hedgehog in the Iron Mask

Season 1 - Episode 23 - Aired 3/24/1999

In this episode the Sonic Underground rescue a prisoner from one of Robotnik's old prisoners - a hedgehog wearing a mask (so you can't see his face properly). The prisoner claims he is the hedgehogs uncle, the twin brother of Queen Aleena! But it is all just a sinister plan by Robotnik to split the Sonic Underground up.

Watch Now:Amazon
Country Crisis
star
7.40
5 votes

#11 - Country Crisis

Season 1 - Episode 31 - Aired 4/21/1999

The Sonic Underground are on a mission to stop a group of hillbillies from feuding so they can stop Robotnik's dam-building project from flooding the countryside.

Watch Now:Amazon
Haircraft in Space
star
7.40
5 votes

#12 - Haircraft in Space

Season 1 - Episode 32 - Aired 4/25/1999

A salon robot is hypnotising people that go to her salon into revealing deep secrets. When Sonia goes, she spills information about the resistance! Can she and her brothers keep Robotnik from getting the information?

A Hedgehog's Home is Her Castle
star
7.20
5 votes

#13 - A Hedgehog's Home is Her Castle

Season 1 - Episode 12 - Aired 2/14/1999

Sonia inherits a spooky castle, but all is not as it seems when they stay there overnight...

Watch Now:Amazon
Flying Fortress (Chaos Emerald Crisis, Part 1)
star
7.20
5 votes

#14 - Flying Fortress (Chaos Emerald Crisis, Part 1)

Season 1 - Episode 25 - Aired 3/31/1999

Robotnik creates a new flying fortress to lay waste to the planet. When the Sonic Underground suspects that the Chaos Emerald is keeping the fortress aloft, they head to the Floating Island to enlist the help of Knuckles. But we all know how hard-headed Knuckles is...

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The Last Resort
star
7.00
7 votes

#15 - The Last Resort

Season 1 - Episode 9 - Aired 2/3/1999

The hedgehogs come across Lake Valley, a beautiful resort. But how can it be beautiful when Robotnik's controlling the rest of Mobius? The band's about to find out...

Watch Now:Amazon
Come Out Wherever You Are
star
7.00
7 votes

#16 - Come Out Wherever You Are

Season 1 - Episode 10 - Aired 2/7/1999

Sonia has been invited to a debutante ball, arranged by none other than Robitnik's right hand man Bartleby! Sonic helps her in getting there without being caught, but even more problems arise when Cyrus chooses her to fly the captives of the ""Predator"" to safety...

Watch Now:Amazon
Artifact
star
7.00
5 votes

#17 - Artifact

Season 1 - Episode 13 - Aired 2/17/1999

In order to make a lot of money, Robotnik sells artifacts to the nobility of Mobius. But these artifacts are actually from more recent history; they are bombs, and they're about to go off.

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Friend or Foe?
star
7.00
4 votes

#18 - Friend or Foe?

Season 1 - Episode 16 - Aired 2/28/1999

The band visit the Floating Island in search of their mother. There they meet Knuckles the Echidna, the island's guardian, who has been told by Sleet and Dingo that the Sonic Underground is after the Chaos Emerald.

Watch Now:Amazon
The ART of Destruction
star
7.00
4 votes

#19 - The ART of Destruction

Season 1 - Episode 38 - Aired 5/16/1999

The Sonic Underground come across ART, Robotnik's most powerful robot ever, that can think and learn for itself. But ART soon learns the power of friendship...

Watch Now:Amazon
The Pendant
star
6.75
4 votes

#20 - The Pendant

Season 1 - Episode 39 - Aired 5/19/1999

Sonia finds a magic pendant that threatens to turn her invisible.

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Head Games
star
6.75
4 votes

#21 - Head Games

Season 1 - Episode 17 - Aired 3/3/1999

Queen Aleena sends her children over to Speedster Island, a place Bartleby is trying to turn into a holiday resort. Sleet and Dingo are pretending to help, but they just want to robotocise the islanders, who worship three stone heads that resemble Sonic, Sonia and Manic.

Watch Now:Amazon
Bartleby the Prisoner
star
6.75
4 votes

#22 - Bartleby the Prisoner

Season 1 - Episode 37 - Aired 5/12/1999

Bartleby is placed under arrest for helping out the resistance. As you might expect, it's the Sonic Underground to the rescue!

Watch Now:Amazon
Sleepers
star
6.75
4 votes

#23 - Sleepers

Season 1 - Episode 36 - Aired 5/9/1999

Robotnik invents a new dart that induces sleep and sends them after the resistance. It's up to Sonic and sibs to stop them from the source.

Watch Now:Amazon
The Big Melt
star
6.75
4 votes

#24 - The Big Melt

Season 1 - Episode 35 - Aired 5/5/1999

Robotnik comes up with his most original plan yet: melt the polar ice caps. Things will be hard for the Sonic Underground when Sonia gets split up from the group and mistaken for Queen Sauna.

Watch Now:Amazon
Sonia's Choice
star
6.75
4 votes

#25 - Sonia's Choice

Season 1 - Episode 34 - Aired 5/2/1999

Sonic and Manic have been captured and are about to be robotisized! It's up to Sonia to save her brothers. But the thing is, they're in seperate robotisizers at opposite ends of the city!

Watch Now:Amazon