The name Eugene accidentally calls Varian is "Varitas" which means "truth" in Latin and was the goddess of truth.
Varian is voiced by Jeremy Jordan who originated the role of Jack Kelly in the Broadway musical version of Disney's 'Newsies.'
Alchemy was the study of turning base metals into gold. There were many practitioners over the years, but no one ever succeeded.
This is the only episode that Varian called Eugene by his alter ego "Flynn Rider".