Number 10:
Nico originally was from Alola, and his second journey will be there. He does end up collecting every Alola starter there, but that's only because he made friends with them while he still lived in Alola.
Number 9:
Nico is kinda a flirt, and he loves to try to woo girls. Unfortunately, his courting skills are terrible, and he has only had one girlfriend, who he only was able to keep for a day.
Number 8:
Nico has a sense for when something's wrong in Hoenn. It's his nature. He actually felt the disaster of {Line Cut for Spoiler Resons} before it happened.
Number 7:
Nico is hyperactive to the point where he once, after eating 2 cylinders of Lemonade Powder, literally ran on water.
Number 6:
Nico can cook very well, and he has made dishes for a cooking competition in Slateport. He got in second, and that's only because he screwed up and mad his chocolate fudge brownies with butterscotch, which one of the judges was allergic to.
Number 5:
Nico is a fast runner, and loves to race people. You could see that in several issues of the series... Yeah...
Number 4:
Nico has a huge sweet tooth, and will cook up and mow down desserts in a matter of munites.
Number 3:
Nico, despite being a weird, hyperactive, and straight up ignorant kid, can be really serious when he and his friends are in danger. He fights with no mercy when he battles an enemy that threatens to hurt his friends.
Number 2:
Due to his father being a normal gym leader, Nico has learned about almost every normal type. That's why his Slakoth will grow so quickly, because he has been shown how to train them.
Number 1:
Nico's world keeps growing and growing, and it's hard for him to keep up with everything. He might go crazy sometimes, but don't underestimate his intelligence or his competitive strength. His utter strangeness might be confusing, but get to know him, and your gonna have a great time. (Just like me when I beat my cousin in bike races. Haha.)