Conversation so far:
What was Grigory Potemkin's personality like?
Potemkin exuded both menace and welcome; he was arrogant, demanding of his courtiers and very changeable in his moods but also fascinating, warm and kind.
So Grigory Potemkin could be nice too?
Yes, Gregory Potemkin exuded both menace and welcome.“
What did others have to say about Grigory Potemkin's personality?
It was agreed among his female companions that he was amply endowed with 'sex appeal'. Louis Philippe, described him as colossal like Russia, an inconceivable mixture of grandeur and pettiness.
So Grigory Potemkin was a ladies' man?
Yes, it was generally agreed among his female companions that he was amply endowed with 'sex appeal'.
What else was Grigory Potemkin's personality like besides his moods and sex appeal?
Potemkin was also an intellectual. The Prince of Ligne noted that Potemkin had natural abilities [and] an excellent memory. He was interested in history and generally knowledgeable.
What was Grigory Potemkin's reputation?
Ultimately Potemkin proved a controversial figure. Criticisms include laziness, corruption, debauchery, indecision, extravagance, falsification, military incompetence and disinformation on a vast scale.
So people didn't like Grigory Potemkin?
Supporters held that only the sybaritism [devotion to luxury] and extravagance... are truly justified, stressing Potemkin's intelligence, force of personality, spectacular vision, courage, generosity and great achievements.
Was Grigory Potemkin smart?
Though not a military genius, he was seriously able in military matters. Potemkin's contemporary Ségur was quick to criticise, writing that nobody thought out a plan more swiftly [than Potemkin].

Question: What else should I know about him?
Self-contained rewrite: What else should I know about Grigory Potemkin?