Ask about the alchemist who created the mutants.

Quest Text We met each other once at Glish, right?
It's been a long time.

Summary Hmm... That is quite a sensitive subject to
raise all of a sudden.
You are aware of how the followers of Elion
regard alchemists, are you not?

Summary Ah, dear me... I had no intention of saying anything, but...
I suppose you have proven yourself trustworthy after having done so much for Glish.
The alchemists who created those Mutants
were none other than Donatt and myself.
I fear we were both young and reckless back then...

Summary Yes, both Donatt and I were young and reckless when we created the Mutants.
We had both ventured to Calpheon to study alchemy.
Being the fool that I was, I wished to pull a prank on
Donatt using the Trolls that roamed Quint Hill.
Really scare him out of his wits, so to speak.

Thus I began researching a draught to create giants,
to which I met with some success. Donatt was shocked at the sight of my giant Troll.
I felt a little guilty at the time, but quickly brushed off such unbecoming feelings
as this was a prank, after all.
I fear that was a huge mistake on my part...

Summary Not long after, Donatt requested my presence.
Yes, the very same Donatt who preceded me as chief of Glish.
He said he wished to observe
Ogres at Mansha Forest.
I suspected nothing as I followed him,
so was therefore dumbfounded when we encountered a gigantic Ogre.
Yes, Donatt too had crafted his own Giant's Draught Knowledge Item.
I recall how amazed I was at such skill.
You see, I naively believed that none but myself could craft such a thing,
so was quite astounded to find that Donatt had.
And yet, it would take me much longer to realize that underlying my initial amazement
was a growing ambition to stamp out anyone in my way of becoming the greatest alchemist...

Summary Neither Donatt nor I were able to reverse
the effects of the mutations we had caused that day.
So it is perhaps a blessing that the secrets of
crafting Giant's Draught Knowledge Item have been lost to time.
For the ingredients of a key component,
the Giant Mutagen, are now long forgotten.
Soon after we had completed our studies,
we heard news of "incidents" occurring near Glish.
Adventurers were being attacked by the Mutant Ogre NPC Knowledge and Troll we had created.
It was then we realized the error of our ways. Too late, sadly.
Not wishing to harm the reputation of other alchemists,
we decided to keep this secret to ourselves.