Finally someone drew her as an actual human. Like... It's fun drawing human characters as Umamusume. But Tazuna and Director Akikawa are 100% confirmed to be human.

Stachelbeeerchen said in comment #2641523:

Finally someone drew her as an actual human. Like... It's fun drawing human characters as Umamusume. But Tazuna and Director Akikawa are 100% confirmed to be human.

Pretty sure they're both all but outright name-dropped by Cygames to be Tokino Minoru and Northern Taste

Stachelbeeerchen said in comment #2641523:

But Tazuna and Director Akikawa are 100% confirmed to be human.

I'm gonna be THAT guy and ask for source/citation.