Personalities

In RB1, Neptune was uncaring for anything important and was very lazy and impatient. She soon learned however that it was important to protect everyone depending on them and made plenty of new friends.

In RB2, Neptune is still an airhead and pretty childish. But she's lost her attitude and impatient behavior and seems a little more mature and caring, and a little less selfish.

In RB3, Neptune seems to be the same but she has become somewhat more rude and insensitive, and has picked up her lazy behavior again, showing that she's never quite gotten over being irresponsible yet.

In the manga adaptation, Neptune is still a friendly, touchy, happy girl whose love of food is a lot more apparent then in the game itself.

In the anime adaptation, her personality remains mostly the same, though she seems slightly less vacuous and tends to take situations, as well as her responsibilities, more seriously than her video game counterparts.