This collab has a unique structure from SiIvaGunner's previous fusion collabs; instead of being centered around a single song, each segment aside from the "Megalovania" opening is an arrangement of a boss battle theme (or the song associated with the boss in the case of Wood Man, or an equivalent thereof in the case of LazyTown and Yellow Submarine) from the game(/show/movie) of the previous segment's style.
|0:15||Megalovania||Undertale||Thunder Force IV||Sans|
|0:31||Evil Destroyer||Thunder Force IV||Hyper Princess Pitch||Gargoyle Diver|
|0:47||Boss Theme||Hyper Princess Pitch||We Are Number One||Mecha Santa|
|1:01||We Are Number One||LazyTown||EarthBound||Robbie Rotten|
|1:15||Pokey Means Business!||EarthBound||Puyo Puyo Fever||Pokey Minch|
|1:36||The Untrained Demon King Ultimate Legend||Puyo Puyo Fever||Kirby: Squeak Squad||Popoi|
|1:58||King Dedede's Theme||Kirby: Squeak Squad||Plants vs. Zombies||King Dedede|
|2:18||Brainiac Maniac||Plants vs. Zombies||Yellow Submarine||Dr. Zomboss|
|2:40||Hey Bulldog||Yellow Submarine||Crypt of the NecroDancer||The Bulldog|
|3:14||Last Dance||Crypt of the NecroDancer||mm2wood||The Necrodancer|
|3:27||Wood Man Stage||Mega Man 2||Sonic the Hedgehog 3 & Knuckles||Wood Man|
|3:49||Final Boss||Sonic the Hedgehog 3 & Knuckles||Splatoon 2: Octo Expansion||Dr. Robotnik|
|4:02||Fly Octo Fly ~ Ebb & Flow||Splatoon 2: Octo Expansion||Paper Mario: The Thousand-Year Door||Commander Tartar/NILS Statue|
|4:29||Hooktail Battle||Paper Mario: The Thousand-Year Door||Deltarune||Hooktail|
|4:56||Chaos King||Deltarune||Super Smash Bros.||King|
|5:25||Final Destination||Super Smash Bros.||Cuphead||"The Mastermind's Hand"|
|5:53||One Hell of a Time||Cuphead||Undertale||The Devil|
At 6:08, the "One Hell of a Time" arrangement is abruptly cut off by the transition used for King for Another Day Tournament reveals. We then see the various visuals for the fusion collab's segments drift by, set to a calm, jazzy medley of the various themes based on "It's Raining Somewhere Else" from Undertale, ending with a "Boss Battle Fusion Collab" title in the Undertale logo's typeface.
After the screen fades to black, we suddenly get a "reveal" for Sans as a contestant in the King for Another Day Tournament. However, the logo's text turns into:
lol nahhh cmon dude
sans literally already said
he didnt want to be in the
This text references the reveal trailer "Knock Knock Knock!".
Instead of "SUMMER 2019", the text changes to "GET DUNKED ON", accompanied by Sans' soundbite.
Audio: Ahmaykmewsik, Anonite, Aquacycle, Chango, ChickenSuitGuy, Ethan64Music, Grambam36, Half Pixel, Netyasha Roozi, LarryInc64, Mitchell, Moder112, Sarvéproductions, Scribblenaut19, Spingus, WaluigiTime64, Zoom Guy
Visuals: 600billionlazer, 813N, adumb, Ahmaykmewsik, Alexander A. McDonald
Anonite, Aquacycle, ChickenSuitGuy, Coach, Count Cannoli, Eevee, Netyasha Roozi, Jorge - Sun Spirit, LarryInc64, Mitchell, Moder112, Sarvéproductions, Spingus, Tocinin, vince94
Thumbnail Art: Keeby, Sparkbag
Please read the channel description.
- The other fighters shown in the roster during the "Chaos King" arrangement reference SiIvaGunner's other original fusion/medley collabs:
- Steven: We Are The Crystal Gems Fusion Collab
- Wood Man: Wood Man Fusion Collab
- Kass: Kass' Theme Fusion Collab
- Adam Levine: Soap Disco Fusion Collab
- Grand Dad: 7 Grand Dad Fusion Collab
- Quote: Balcony Fusion Collab
- Galeem: Lifelight Fusion Collab
- Snowman: Snowman Fusion Collab
- Altair: God of ink fusion collab
- Log: Yule Log Medley Collab
- Mario: Super Mario Land 2 Fusion Collab
- The placement of the "fighters" on the grid also references the release date of their respective Fusion Collab in a similar fashion as in the original Super Smash Bros. character select screen, with the 8 characters in the center representing the oldest collabs chronologically and the 4 on the outside representing the most recent ones.
- The "Chaos King" arrangement was later made into a full rip, titled "Chaos King - Deltarune".
- By September 21, 2019, the video had already become the most popular rip of Season 4. It is the only video from Season 4, the 3rd video outside of Season 1, and the 21st video overall to reach one million YouTube views; this was achieved on June 7, 2020.
- The album version stops at the end of the "It's Raining Somewhere Else" medley, before the fake Sans "reveal".
- Coincidentally, the segment in-between Super Smash Bros. and Cuphead predicted the inclusion of Cuphead as a Mii Costume for Super Smash Bros. Ultimate more than four months after the rip was uploaded.