>>124052In Naruto Shippuden, The second time Might Guy encounters Hoshigaki Kisame, he doesn't remember having seen him before. That happens because the first time they fight, Kakashi tells Guy, Asuma and Kurenai to look down to Itachi's feet and not his face, so they avoid being targeted by his illusionary powers. Since Guy wasn't looking up, he never could see Kisame's face, and it's the reason why he doesn't remember him.
