YMMV / Worlds Collide (TMNT)

• Complete Monster: Two versions of Shredder:
  • Tengu/Demon Shredder is the master of the Foot Mystics and the greatest threat either the Turtles or Team Avatar have ever faced. He was originally Oroku Saki, a 4th century Ninja who battled alongside the future Ninja Tribunal and Avatar Ryukyu to defeat a demon known as Shredder. However, Saki made a pact with the demon to let it into his soul. Becoming Tengu Shredder, he unleashed an army of demons and undead across Japan to destroy anybody who stood against him, planning to spread his rule across The Multiverse. When his former friends rose up to defeat him, Tengu Shredder personally destroyed half their army and attempted to kill them before being defeated and sealed. Freed by the Foot Mystics, who he abuses for the smallest failures, Tengu Shredder tries to kill Avatar Aang to remove the threat to his power, laying waste to New York's streets and endangering innocents in the meantime. Tengu Shredder threatens to kill Aang's friends if he doesn't surrender, noting that he may keep Katara alive as his concubine. He uses his powers to transform New York into his domain of suffering, agony, and pain where the living are constantly tormented by his demonic forces and plans to spread it to the rest of existence. When the heroes band together to stop him, he tries to use his powers to kill them, gloating that crushing people like them will make his conquest of the multiverse fun.
  • Ch'rell is the Utrom criminal who took Shredder's identity in an attempt to harness the power of Tengu Shredder, who more than lives up to the original Shredder's evil. Committing most of his canon crimes, Shredder finds the Nexus gateway which transports him and the Turtles to the Four Nations world. Partnering up with the Fire Nation, Shredder assists in their conquest of Ba Sing Se where he orders the Dai Li massacred after they try to defect. Making Prince Zuko join him by threatening to kill his whole family, Shredder almost kills Aang. Shredder presents himself as an ally to the Fire Nation and brings his army and technology to their world to seemingly cement their rule. Shredder has Baxter Stockman conduct torturous experiments on the benders to discover the secret of their power, while using the Day of the Black Sun to massacre the Fire Nation leadership and capture all the rebels. He manipulates Princess Azula to make her believe her brother was responsible for the death of their father and uses her as his enforcer. Shredder dries the Fire Nation's and the Earth Kingdom's economies to complete his true plan, Project Meteoroid, a plot to make Sozin's Comet crash into the world of Four Nations and wipe out all life on the planet, while the Foot Clan escapes the impact and uses the resources they stole from the world to wipe out the Utroms and conquer the multiverse. When the heroes, including his adopted daughter Karai, face him, Shredder abandons his troops to die with the rest of the planet and tries to use his empowered armor to kill his enemies.
• Harsher in Hindsight: While it is debatable if the Shredder is simply utilizing more advanced weaponry during his first fight against the Avatar, the fact that he doesn't abide to normal bending conditions pretty much gave the world of Avatar: The Last Airbender a taste of a non-bending major villain force years before it actually happened in canon.
• Hilarious in Hindsight: One can now recreate various fight scenes from the fic in Nickelodeon All-Star Brawl, especially pitting Aang or Toph against the Shredder (though it's his classic incarnation rather than the 2003 one).
• Moral Event Horizon: Shredder was already a vile piece of work in his home series, but the fic tears him a new one that's infinitely beyond the point of no return. Mortally wounding Aang and attempting to do the same to Katara? Already not looking good. Kill off Fire Lord Ozai and usurp the Fire Nation? Pretty underhanded. The true crux of his MEH lies in his master plan: exhaust the Fire Nation's resources to construct gigantic spaceships that will launch on the day of Sozin's Comet, then use spaceships to hurl the comet into the planet, causing a massive extinction-level event that will effectively wipe out all life, and once the dust settles, use the world to forge an army of artificial Benders that will help him conquer even more worlds. Had he actually succeeded, he would have wiped out 6.2 billion people, and that's saying something.
  • The Shredder built one ship. Nothing was said about the others ships.
• Nightmare Fuel: The Shredder, full-stop. This incarnation is a significant step-up from the 2012 version that terrorized Arendelle from the same author's story. He's a threat to virtually everyone, both good and evil alike in terms of presence alone.
  • A factor to this? The story is rated T, and 4Kids Entertainment is all but gone at this point. This allows the author (who was actually fearful of this incarnation when he watched the series as a kid) to fully portray him and his brutality to the max: fights with him are bloodier and he is much, much more willing to kill.

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