I met a lot of pro boxers (and K1 kick boxers, but this is not the topic) : I won't list them all (since there are a lot of not very well known boxers), and it was just for a short time or for training. (meaning not a lot of discussion)

but some boxers impressed me in good ways

Oleg Platov
Souleyman M'baye
Jean Marck Mormeck
Fabrice Tiozzo
Lucia Rijkers
Valerie Henin (she was a fox!) :-)

there are very good persons.

One boxer made me laugh, Pinklon thomas, I met him during one of my trip in US, he was joking all the time, he was good humoured, really.

One boxer I nearly fought with : Duane Bobick, I know nobody knows him, but he was pretty famous in the 70's 80's, he was supposed to be the next great white hope. I met him and pitty for me, he was totally drunk...and he really cursed at everyone....I just started to say nasty things also (I was young) and we had to be separated....really something to forget.