Adamant Nature if you want it for D/P
-Dragon Claw
-Crunch
-Ice Punch
-Waterfall
The Totodile is going to be used in D/P, and the new physical/special split in D/P means that all the moves in that moveset will run off the Attack stat. That is why an Adamant nature was suggested.all the moves in that moveset are special attack and adamant lower sp att for regular att, which is pointless for that moveset. it should be modest which is the opposite of adamant.