The Kamei Hamei Turtles
"Since you're going to be Kamei's little soldiers, I think I'll call you all Kamei Hamei One through Nine for now. He can give you individual names later if he wants." William decided simply. If he had to give each new Magical Beast a unique name, it would be a mess to remember them all, even with the Mind Talent.
Next, William planned to upgrade them all to the SS-Rank directly, which would cost 11643 Potential Points for one Hatchling or a total of 104787 Points for all nine of them. He had more than enough with the last week of Alchemy and Tribulations, but it was still a heavy hit to William's balance.
He spread out the nine baby turtles and started their advancement, one upgrade at a time rather than all at once. Their first upgrade was simply a growth phase from baby to fully grown, then the subsequent ones each resulted in a Heavenly Tribulation of their own.