A cold and intense boss theme!

Artist - MyNewSoundtrack
Composer - MasterSwordRemix

Apprehension

FLOWEY || DELTATRAVELER OST

Unused soundtrack from a hypothetical Undertale Halloween Hack by airenn.
Edited by me.
Intro: https://soundcloud.com/madness-of-determination/godbadorrer
Older version: https://soundcloud.com/madness-of-determination/kill-the-monster

THE DARK REVENANT

Earthbound Halloween Hack Music - Final Boss (Megalovania)

Originally composed by Toby "Radiation" Fox, with all rights belonging to him.

Undertale - Bergentrückung/ASGORE (Final Fantasy VI)

Theme that plays when you fight the boss, Dalv. This is also my fave song yet
I do not own this song!
All credit goes to MasterSwordRemix and MyNewSoundtrack for making this song.

( Undertale Yellow - http://gamejolt.com/games/undertale-yellow/136925 )

Forlorn (Undertale Yellow OST - 13)

Super Smash Bros Ultimate OST - Megalovania (Sans Boss Theme)

There goes 50 hours of my life. No regerts.

YouTube mirror: https://www.youtube.com/watch?v=Q3H6une4XHg&feature=youtu.be

Special thanks:
UniCookie778 for his massive playlist of Megalovanias.
Kyle (@JudithCubby) for teaching me how to use Adobe Premiere
Phantismal from Discord for helping design the layout of the videos

Tracklist can be found here:
https://docs.google.com/spreadsheets/d/10ITw2oPebxAuIE9FfNLJPjrLDndHI9FZpYIHCzKTP4s/edit?usp=sharing

Special solos, in order of appearance:
SayMaxWell - Megalovania Duel
Kamex - Megalovania Remix
Ralfington - Chiptune Remix
Toby Fox - Megalovania (Homestuck Version)
Taylor Davis - Violin Cover
String Player Gamer - Electric Violin & Electric Guitar Cover/Remix
Rob Landes - Megalovania Violin Duel
With Ether - Acoustic Guitar Duo Cover
djsmell - Megalovania Piano Cover (Sans Version)
Cami-Cat - Megalovania Piano Cover
Ontopic - Owl City - Megalovania
LittleVMills - Epic Metal Cover
longestsoloever - Metal Guitar Cover
GaMetal - Megalovania Cover
Nirre - Megalovania (TOTALLY RAD VERSION)
RichaadEB - Metal Cover (the first one)
RichaadEB - Metal Cover (the second one)
Caleb Hyles - Metal Version (also featuring RichaadEB)
Toby Fox - Megalovania (Smash Bros Version)
Joe Jeremiah - A-Bit of Undertale

Additional video credits:
Internet Reacts to Sans in Smash - https://www.youtube.com/watch?v=HBkr6sNvDmE
Reality Check Through The Skull Beat Saber - https://www.youtube.com/watch?v=IzXEgveTj_8
Sans Reveal Nintendo NY - https://www.youtube.com/watch?v=gmau-gRMr_U

Special shoutouts:
The bros from high school (I rolled a 6)
The lads from college (eat fard)

Megalovania But It's 100 Versions At Once

Underblade Chronicles - You Will Judge Our Sins

Sans and Papyrus: Chara's Inside Story - In The Judgement Hall by LiterallyNoOne

I made this a while back but I never got around to uploading it until now. Here it is tho!! 
Anyway, this is MSB, His Theme AND Megalovania (yes, megalovania) in the style of In the final/Grand Finale from Mario and Luigi's Bowser's Inside Story. However, I don't think it requires many brains to know that!

Also here, check out the rip on TTGD if you wanna- 

https://www.youtube.com/watch?v=ZjqxzFE3m9U&t

Credits-

Thumbnail Art by flagpolethreeup.

Check out their Deviant Art page -

https://www.deviantart.com/flagpolethreeup/art/Mario-and-Luigi-RPG-X-Undertale-MegaloMario-658732025

Sources-

In The Final by Yoko Shimomura -

https://www.youtube.com/watch?v=faA3IMDbb5I&t

Megalo Strike Back by Toby Fox -

https://www.youtube.com/watch?v=ZpJudi7_iiw

His Theme by Toby Fox -

https://www.youtube.com/watch?v=IkOK8tdEsFY

and finally,

Megalovania by Toby Fox -

https://www.youtube.com/watch?v=wDgQdr8ZkTw

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That is all, have a great day/evening :)!

P.S - I just wanted to say, Thank You and Rest In Peace Alphadream. Mario & Luigi: Partner's in time holds a special place in my heart to this very day. I have the fondest memories of playing this game when I was a kid. 
To those who haven't played any of the Mario and Luigi RPGs, then please do!!

Megalo Strike Back - Mario & Luigi: Bowser's Inside Story

Hmm. . . I realized that "LiterallyNoOne" deleted the videos of the undertale remixes on their main channel, I left their secondary channel where "almost" all their remixes are  https://www.youtube.com/@LNOXtras/featured

Underblade Chronicles - You Will Judge Our Sins

LazGamer I