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0:00 - 0:09 Hiroshi Tatezaki (confirmation via twitter)
https://www.sakugabooru.com/post/show/247621
Tatezaki Said:
I also drew a scene where Supreme transforms into its final form.
As the end credits show, the staff members who participated were all legends, which made me very humbled.
0:09-0:11 is CG
0:12 - 0:22 was a chinese Animator (either Hao Che, Teng Fu or Zondi Hu. But given booru entries, it's most likely Hao Che)
0:23 - end (1 cut) was then a different Animator again.