Sonic Underground/YMMV

• Cliché Storm: A couple episodes.
• Crowning Moment of Heartwarming: The song "Someday", where Sonic vows that someday he will unite with his siblings.
  • Manic's song, "Home", where he finally feels like he belongs in the idyllic Mobodoon.
  • Rounding out the trifecta is Sonia's song to her friend Mindy, "Money Can't Buy," wherein she states that money can't buy their friendship.
  • Queen Aleena saving the hedgehogs at times, showing how much she cares for her kids.
• Crowning Music of Awesome: If nothing else, the opening theme.
  • "Someday", "The Fastest Thing Alive", and "Home" are pretty good, too.
• Ear Worm: The theme song.
• Ensemble Darkhorse: Manic, to some. It's his fashion sense, I bet.
• Fanon: Amy and Sonia are typically shown to be get along (if the former isn't mistaking the latter for Sonic's girlfriend).
• Hilarious in Hindsight: Amusingly, Chomps, Knuckles' pet dinosaur, shares almost the exact same colors as the Biolizard.
• Ho Yay: At the end of the second episode, Sonia kisses Sonic on the cheek for a job well done, and Sonic turns to Manic and says, "You're not gonna kiss me, are you?" Manic's answer? "No way, but you are kinda cute." One of the funniest lines on the show.
  • In another episode, Sonic asks for a dance while looking Sonia's direction. She accepts, but then he says he was talking to Manic, and the two begin slow dancing. The pair had a surprising amount of this.
• Memetic Mutation: Knuckles screaming "I HATE THIEVES!!"
• Moral Event Horizon: While not quite up to the level of his Complete Monster SatAM counterpart, Robotnik once tricked Manic with a robot made like a baby hedgehog in the hopes that he'd get attached to it...and reveal where Sanctuary, a place of refuge for children and infants was. So he could destroy it.
  • Another time, when confronted by a Chaos Emerald-fueled Dingo that was poised to destroy the planet, Robotnik was willing to let it happen if it meant the hedgehogs would die with it.
• The Scrappy: Sleet and Dingo to some extent, as well as Bartleby.
• Ship Mates: Rouge/Shadow fans that don't hate the guy, typically pair off Knuckles with Sonia (assuming they even acknowledge his other love interest, his distant cousin from the comics, Julie-Su).
• So Bad It's Good: The show does have its fans.
  • And then there's those who think this of the music.
• This Is Your Premise on Drugs: It's the classic Sonic VS. Robotnik story...except Sonic has siblings, is blood related to royalty, and they fight Robotnik through THE POWUH OF RAWK!
• Uncanny Valley: Some of the characters in this show really crawl close to this territory. (i.e. Just look at Sonia's adoptive mother in the first episode-she looks like something pulled out of a Renaissance Fair!)