The 41st episode, the final part of 'Necrosan-The Final Challenge, and the Season 2 finale.
Tafeli decides to go out and save Z-Squared from the tortures of Sin. However, in the process, he fights off against creations of Harmony Korine's psyche and is mortally wounded by Sin. In his final moments, he encourages Z-Squared to keep on fighting before Sin kills him. Z-Squared, in a fit of sorrowful rage, finally achieves his full potential that he was building up over the series and...transforms. A mighty transformation indeed, Z-Squared has become Shadow-Squared and a fight ensues between the two creatures. Eventually, their battle destroys the Holo-World and they are sent flying into the Grand Canyon. Sir finds them and they are both alive. However, Sin is killed by Titan's pinkie-to-the-orb and everyone is returned to life, even Titan's minions (with a few changes). It all ends with Titan and his minions in Ooo and the Team heading to a funeral in the Candy Kingdom.
Meanwhile, the Hellspawn are searching for a replacement for Necrosan and they choose, of all people, Scanty and Kneesocks from 'Panty and Stocking with Garterbelt'.
- An Arm and a Leg: Tafeli has most of his tentacles sliced off by Sin's razor discs.
- Anger Born of Worry: Z-Squared to Tafeli when he's mortally wounded.
- Autobots, Rock Out!: The final fight theme is...this.
- Badass Boast: Shadow-Squared delivers the most corny, yet the most epic, one of them all in the series. All to the tune of 'Hearts on Fire' from Rocky 4.
- Book Ends: Sin and Z-Squared end up on the first place they fought...the Grand Canyon.
- And Titan kills Sin with his pinkie.
- By the Lights of Their Eyes: Shadow-Squared's eyes on the poster.
- Came Back Strong: Titan's minions. Big time.
- Came from the Sky: Sin and Z-Squared fall to Earth at the end of their battle.
- Chase Scene: Tafeli and the Trash Humpers.
- Cold-Blooded Torture: Sin does this with Z-Squraed, mocking him and subjecting him to his least favorite things.
- Crater Power: The transformation does this.
- Creative Closing Credits: Again, on Youtube. It even includes the music during Shadow-Squared's speech and a remix of the final battle theme.
- Cruel and Unusual Death: Sin turns back into Necrosan when he dies. This involves his skin peeling off as he flies upward in a panic. Even Necrosan's muscles are gone! Then the light fades from his eyes and his bones fall down, crumbling into dust.
- Cure for Cancer: Z-Squared's transformation causes this, among other things.
- Did I Just Say That Outloud: Z-Squared just couldn't believe what he just said as Shadow-Squared, dismissing it as corny and such.
- The Dog Bites Back: Titan.
- Dramatic Irony: Sin was fully convinced nobody could defeat him. A 'nobody' did indeed. Guess who?
- Due to the Dead: The fanfic ends with the Team ready to head to a funeral. Before this, Z-Squared considers the victory over Sin to be this for Tafeli and all the rest.
- Earth-Shattering Kaboom: The Holo-World is destroyed by a combination of Sin's wrath and Shadow-Squared's attack.
- Emotion Bomb / Angst Nuke: Z-Squared's transformation levels the area in which he and Sin are on. It can even be seen from the Milky Way!
- Energy Weapon: The Trash Humpers have these.
- Eye Lights Out: Necrosan's death.
- Final Speech / Rousing Speech: Tafeli begs Z-Squared not to give up before he's killed by Sin.
- The Friend Nobody Likes: Ice King to Titan.
- Hired for Their Looks: Scanty and Kneesocks, but only for their demon heritage, actually.
- Literally Shattered Lives: Sin crushes Tafeli in his hand.
- Killed Off for Real: Tafeli. Yes, we mean that. Also, Sin/Necrosan.
- Manly Tears: Z-Squared lets many of these out when Tafeli dies.
- Mood Whiplash: When Shadow-Squared realizes some...odd...choice of chest appliances, he freaks out.
- My Life Flashed Before My Eyes: Memories of Z-Squared's time with the Team flash before him as he transforms.
- No Man Should Have This Power: Discord and Sin seem to think so for Sin.
- No One Could Survive That!: The team thinks Z-Squared blew himself up after his transformation.
- Not Quite Dead: Sin, right after he'd just been beaten into paste.
- Official Couple: Titan and Eru.
- Oh, Crap!: When Z-Squared finds himself surrounded by things related to Harmony Korine.
- Sin has a much bigger one related to Shadow-Squared.
- Rage Breaking Point: A driving point behind Z-Squared's transformation.
- Ship Tease: Canyon and Mysterious, Dementia and Scorcher, and maybe Rep-Stallion and Doctor Princess.
- Shout-Out: The final moments of the final battle seem to be taken from the 'F-Zero' anime finale.
- Take That!: To torture Z-Squared, Sin conjures up the world of 'Ken Park' and other works by Harmony Korine. He also plays 'Imaginary Friend' from The Land Before Time: Journey to Big Water.
- Tall, Dark, and Handsome: Shadow-Squared to Marceline.
- Theme Music Power-Up: A 50+ pitch version of 'Gohan Angers' by 94Stones plays when Z-Squared transforms.
- Villainous Breakdown: When Shadow-Squared arrives, Sin starts to lose it. And it goes downhill from there.
- Walk on Water: In Shadow-Squared's case, it's walking on air.
- Well-Intentioned Replacement: Satan needs to replace the now dead Necrosan. So, he chooses Scanty and Kneesocks.
- What the Hell, Hero?: Tafeli gives one to Sir for abandoning Z-Squared.
- The World Is Just Awesome: Z-Squared's transformation causes a string of good events to happen on Earth.
