Hero Star Rank
Heroes are ranked by their 'Stars' and the amount they have will determine their raw stats. Getting stars will also unlock additional active and passive skills and allow for higher mastery options for better leadership skill.
Hero Mastery
The 'stones' that you obtain through Elite and Bonus stages can be used to increase your hero's mastery. Mastery increases the hero's raw stat while leveling up leadership skill. The hero mastery level is capped by your hero's star rank which is indicated by 'red' stars.
Gear Upgrades
You can make your hero stronger by uprading the gears. Ugrading the gears requires the materials that you get through stage drops, Dimensional Rift, pieces of dimensional debris, and Gold.
Skill Upgrades
You can upgrade your hero's skill damage or buff so it becomes more effective by using Gold. It takes a lot of Gold to upgrade a hero's Skill and it is capped by your hero's level.
Striker Synergy
Strikers are character 'summons' that will assist your hero at key times during battle with their unique striker combination. The summoned striker will land and use 1 of the skill that they have available and it will be added to your overall damage output.
Leadership Skill
You can unlock and upgrade leadership skills through mastery and hero rank. Your designated leader must be placed in the midde to make leadership come into effect. All team members will receive the benefits of the leadership skill for the entire duration of the level.
Team Bonus
Team bonuses are awarded when a certain combination of Characters are put together as a team. If you have two hero's that get a certain team bonus boost the third non-related member will also get it.
ISO-8 Raw Stats
ISO-8 is an item that can be equiped to your Characters to increase their stats. You can get ISO-8 by doing the Daily quests or from Dimensional Chests.
ISO-8 Bonus Stats
When you combine different combinations of ISO-8's you will get additional stats and skill buffs. You start with 1 slot open and there is 8 in total available. You gain extra slots at levels 10, 20, 30, 35, 40, 45 and 50.
Uniform
The uniform your hero wears can offer special stats or skill effects. To find out what these are exactly you need to check with the shop.