Level 1 Hans
Gross. Level him now and 10/10/10, bro.
Shakespeare post ST quest gives targettable 20% NP bar for 1 guy, and 1 turn 40% buster, pretty much budget Merlin.
Mozarts gives 1 turn 40% Arts Up and 50 stars, who guarantee a crit in every card in 1 turn.
Level Kotarou at least to 30 and do first ascension, he has targettable evade.
Full level Euryale, she has 5* dmg on NP vs males and full stalling potential.
Billy has 50% charge at lv 10 skill. And NP pierces evade.
Robin is a nuke, specially with Mozart combing.
Leonidas has 25% buster support 3 turns. And taunts.
Alexander has Quick buff to be used when Rinshtar Summer and Wu are on cooldown. Is 20%, like them, but just the quick it self. He has Charisma as well. He is a good AOE pseudo-Ushi.
Berserkers are a must, as hey fit in almost any boss floor (minus the Hokusai one…), Lu Bu has a good dmg and is the only ST zerck sans Penth you have. Both Darius and Kiyo are worthy AOE generalists.
Spartacus has 30% charge bar and if you do his ST quests and level 3rd skill to a good level (8-10), he is doable as a wave 1 and 2 clearer.
Phantom is sh*t, but he is one of your only 3 AOe Assassins, alongside Summer Scat and Kotarou…who is also lv1…he has Innocent monster, for passive stargen and replace Hans on this when on CD.
Mephisto is also Innocent Monster skill. First ascension, I think.
100Faces/Zero Hassan has a NP upgrade and arts up (chanced). She can hit hard for her rarity.
Try to level Fran a little more, yes gears are horrible to collect…but lv 70 is better than 60.
Benkei has a 1-turn taunt in first ascension. Use as meat shield and put Battle of Calann on him.