He is, to echo the famous phrase, a riddle wrapped in a mystery inside an enigma.
And after a debut season that began with a bang and ended with a whimper, Liverpool are still no nearer to determining exactly how Darwin Nunez can make a maximum impact at Anfield.
It would be fair to say the Uruguay international striker was on the radar of only a few Reds supporters before the Champions League quarter-final against the striker's Benfica in April 2022. Goals in each leg soon changed that, and saw him catch the eye of Jurgen Klopp as the Liverpool boss looked to add to an attack that would soon lose Sadio Mane to Bayern Munich.