having tested the heroes, I think that the strongest DD in the game is M
ps/what do you think?
actually, if you pick any DPS/Magika girl and - max Lvl and 4/5☆ at least- raise all her four friends to at least 4☆/Lvl 30 for extra bonus- raise affection lvl- upgrade gear SR or higher (not N or R - Don't mind match color or set as previous GK, it doesn't seems to work the same way)- refine is gambling, but worth a shot- raise all three skills you can make any girl super :D
If in My Team... Chevaller...
She's currently the best unit in game. Top tier pvp and adventure. not as good in ancient but that doesn't matter yet.