Notice: This tier list also includes units on JP server and takes their EX 120 abilities into consideration. Units are not sorted from best to worst.
Missing units, wrong ratings, or any input can be given in the comments.
SS: Gamechangers / Meta Defining. S: Top tier. A: Good outside of mono teams and has useful buff/debuffs to help the party. B: Situational. C/D: Outdated / Just No.
If you want to reroll the game, check the reroll page instead, since this list includes many limited-time units that are not available in the gacha pool.