A friend sent me this romhack, and knowing that Espurr was added, I was hoping it would be an available hero option.
I learned the hard way that Espurr is a partner only species.
I don't have any way to use Sky Temple to add Espurr as a hero option, and I don't want to have to wait until the post story to be able to switch to playing as Espurr.
Honestly, it's a major letdown for what could potentially be a very fun romhack, and it kinda turned me away from it.