kevin nash is really hard to play. I love him so much though, total mark. Watch his TNA promos that werent comedy and his return to WWE to get a hang. Catchphrase wise, he doesnt have one. I usually would end on an emphatic statement that fit the promo or helped led in my opponent for their next TT. (people forget its role playing and not "let me not give you any material for you to work with") I'd always drive home in promos stuff about the business, respect, his intelligence, and his nonchalant attitude even though he's best played seriously. Like, he doesnt sweat you but he'll get the win. And even if he doesn't he'll still be more successful than you, and heres what you can look forward too. etc etc. Hope that helps? :X