Sonic Underground
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About
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.
Cast
Jaleel White
as Sonic / Manic / Sonia (voice)
Garry Chalk
as Dr. Robotnik (voice)
Maurice LaMarche
as Sleet (voice)
Peter Wilds
as Dingo (voice)
Gail Webster
as Queen Aleena (voice)
Ian James Corlett
as Cyrus (voice)
Sam Vincent
as Sonic (singing voice)
Tyley Ross
as Manic (singing voice)
Stevie Vallance
as Sonia (singing voice)
Seasons
Episodes
Season 1
Beginnings (Origins, Part 1)
The history of the Underground is told in detail, from the fall of Mobotropolis to the rise of Robotnik. Included, is a prophecy, as told by the Oracle of Delphius, that caused Queen Aleena to give up her own children so that all people of Mobotropolis could one day be redeemed. As the Queen's children grow and witness tragedy all around them, they soon learn that they are not alone in their urge to fight the evil Robotnik.
To Catch a Queen
The Hedgehogs begin to learn the important lessons of what it takes to be a freedom fighter.
Mobodoon
Manic, Sonic and Sonia must end their training early when Robotnik threatens the Oracle and takes a member of the resistance hostage.
The Price of Freedom
Sonia travels to east Mobius to visit her friend Mindy at the LaTour Estate. After being given a watch by her friend Mindy, Sonia discovers that these popular timepieces are really monitoring devices for the Robotnik Intelligence Agency and are mass produced by Mindy's father Mr. LaTour. Sonia, Sonic and Manic confront Mindy and LaTour with this discovery. Realizing the error of his ways, Mr. LaTour ends production and decides to flee with his daughter. The hedgehogs skillfully put the spy devices to their own use to help the LaTour's escape.
Underground Masquerade
Sleet and Dingo plan to collect the taxes owed to Robotnik from the Duke of Velcronia but keep it for themselves. To avoid the wrath of Robotnik, Sleet and Dingo infiltrate the Underground to corral Manic and friends to the commit the crime and take the blame. The scheme is moving along well for the evil duo until they are caught on tape by Max, Manic's friend, who stops the devious Sleet and Dingo enabling the Duke keep his money.
Tangled Webs
The sinister Robotnik blackmails Cyrus, an old friend of Sonic's, by holding his father hostage. Robotnik makes Cyrus gain the Hedgehogs trust and then has Cyrus convince them to save his father. Cyrus reluctantly informs Robotnik of the rescue plan so Robotnik can devise a trap for the Hedgehogs. However, once Cyrus sees the Hedgehogs helping the kids of Mobius, he realizes assisting in the capture of the Hedgehogs is a bad idea. Instead, Cyrus helps the Hedgehogs and in the process they destroy another of Robotnik's swat-bot factories.
The Deepest Fear
On a trip to Port Mobius, Sonic, Manic and Sonia are told that ships are sinking due to the Mobian sea-beast. The legendary story becomes fishy when the Hedgehogs meet Captain Squeegee who informs them of a scam in which townspeople must rely upon Robotnik for protection from the sea monster, when in reality it is Robotnik who is sinking ships, not a monster. Sonic must overcome his fear of water and the monster to find the truth and thereby ending the fears of the sea side town.
Who Do You Think You Are
Queen Aleena's royal journals are rumored to be buried under a palace in the city of Tashistan. As Sonic and his siblings scour the city in search of the scrolls, Sonia gets into trouble when she is accidentally knocked in the head during a confrontation, causing her to lose her memory. Sonia gets into more trouble when she inadvertently sells her power medallion to a local merchant. A young boy from the village makes an attempt to keep Sonia safe, but the two are captured by Sleet and Dingo. Sonic and Manic must then work together to retrieve the power medallion, locate the journals and find the one thing that is most precious to them, Sonia.
Where does Sonic Underground rank today?
Sonic Underground is #2110 on the CineFlixo Daily Streaming Charts today.
- Highest: #2110
- Top 10: 0 days
- Top 100: 0 days
Watch Sonic Underground Online Free — All Episodes in HD
If you've been searching for Sonic Underground all episodes in HD, CineFlixo has you covered. This popular Inglés action & adventure, animation, and kids title from 1999 is available to stream instantly — no ads to fight through, no paid subscriptions, no annoying redirects.
About 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. Across 1 season and 40 episodes, originally airing on TF1.
Sonic Underground Cast and Characters
The cast features Jaleel White (as Sonic / Manic / Sonia (voice)), Garry Chalk (as Dr. Robotnik (voice)), Maurice LaMarche (as Sleet (voice)), Peter Wilds (as Dingo (voice)), and Gail Webster (as Queen Aleena (voice)). Their performances are a major reason Sonic Underground has built such a passionate audience.
Where to Watch Sonic Underground Online
Want to watch Sonic Underground online without paying? CineFlixo is the easiest way. Click play and the series starts in seconds. No popups, no "5 day trial that auto-charges" — just the show.
▶ Watch Sonic Underground NowWhy People Are Watching Sonic Underground
Sonic Underground flies under the radar but it deserves your attention. What makes it work is action sequences that don't feel cheap. If you enjoy Inglés storytelling that doesn't follow the same tired beats, this is the kind of show you'll end up recommending to friends.
Frequently Asked Questions about Sonic Underground
Where can I watch Sonic Underground online for free?
You can watch Sonic Underground online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How many episodes does Sonic Underground have?
Sonic Underground has 40 episodes across 1 season. All episodes are available to stream right here on CineFlixo.
Is Sonic Underground good? What's the rating?
Sonic Underground holds a 6.8/10 rating based on 153 reviews — a solid pick if the genre interests you.
Who is in the cast of Sonic Underground?
The main cast includes Jaleel White, Garry Chalk, Maurice LaMarche, and Peter Wilds, plus a strong supporting ensemble.
Is Sonic Underground available in Inglés?
Yes — Sonic Underground was originally produced in Inglés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was Sonic Underground released?
Sonic Underground first aired in 1999.
Do I need an account to watch Sonic Underground on CineFlixo?
No. CineFlixo is free and you can watch Sonic Underground without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Series You Might Like
If you enjoyed Sonic Underground, check out Adventures of Sonic the Hedgehog, Halo 4: Forward Unto Dawn, Mortal Kombat: Conquest, Eureeka's Castle, and Tweenies.
Frequently Asked Questions
Where can I watch Sonic Underground for free?
You can watch Sonic Underground online for free on CineFlixo. All 40 episodes across 1 season are available to stream in HD without a subscription, signup, or paywall. Just open the show page and press play.
How many seasons and episodes does Sonic Underground have?
Sonic Underground currently has 1 season and a total of 40 episodes. The series status is "Ended", so the episode count may grow as new seasons are released. You can browse the full episode list on CineFlixo and continue watching from where you left off.
What is Sonic Underground about?
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 Delphiu… It belongs to the Action & Adventure, Animation, Kids genres.
In which language is Sonic Underground originally available?
Sonic Underground was originally produced in English. On CineFlixo the show is available in its original English audio, which is the most authentic way to experience the dialogue, music, and performances. Check the player options on the watch page for available subtitle tracks.
When was Sonic Underground first released?
Sonic Underground first premiered on August 30, 1999 (1999). The series has since concluded its run.
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