I finally got the background theme down, after watching the show 3 times lol. 
Here's Assassination Theme.
Enjoy!

here's a link to my cover with visuals! on my Youtube Channel!

https://www.youtube.com/watch?v=z-33q_L13rA

Assassination Theme - Helluva Boss {COVER}

a silly goober that does silly things

https://www.youtube.com/@choccym1lker

Hello :3
I'm John Samuel H. Niverba, but you call me Sam.
I'm 18 years old, I Sing, Play Piano, Drums, Guitar
and i'm based here in Manila Philippines.
My Covers are usually anything!
but i love some 80s Songs, Musicals, Soundtracks like Star Wars, Anime Songs, Rock, Metal, Basically almost anything i can think of :3
if you love listening too my music, go check out my channel if you want to see visuals too :3
https://www.youtube.com/c/SamNiverba/featured

Assassination Theme - Helluva Boss {COVER}

Sam Niverba