Ranks are a game mechanic introduced in Mario & Luigi: Bowser's Inside Story, Mario & Luigi: Dream Team and Mario & Luigi: Paper Jam. They are bestowed upon a character who reaches an appropriate level. Each new rank confers benefits on the recipient.
Ranks for the Mario Bros.
Ranks work slightly differently than the way they did in Mario & Luigi: Bowser's Inside Story. Instead of set rewards, such as extra gear slots and shopping privileges, the player is given limited choices of what one Rank-Up Bonus they wish to give to Mario and Luigi respectively upon reaching a new rank per rank; this excludes Rainbow Rank, where the player gets two Rank-up Bonuses, giving the player the limit of five slots for bonuses per character if the player reaches Level 40.
The Rank-Up Bonuses are the following:
Ranks in this game work similar to the one in Mario & Luigi: Dream Team, but there are seven ranks for every character. Once again, for Rainbow Rank the player can choose two Rank-up Bonuses, which gives the player the limit of seven slots for bonuses per character after having reached the final rank.