Underverse is animated by Jael / Jakei Peñaloza on Youtube.
Underverse Season 1 Full:
https://youtu.be/DRIw5N1YQ3k
Underverse 0.5:
https://youtu.be/FygB1WMEzQQ
Underverse 0.6:
https://youtu.be/y3Hs_Cvaneo
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Sonic Frontiers OST: Find your Flame:
https://youtu.be/J2Mosyg41P8
This falls under fair use (maybe?).
I hope you guys enjoyed the AMV :D