User blog comment:Roresu/Arrival of the 7★ Starters!/@comment-189.101.236.247-20141218194033/@comment-24784503-20141218204645

Actually, they're quite good since their stats scale extremely high with Vargas going to over 8,300 HP as Lord with max HP imps. All of them also have a new mechanic that is yet to be explained called "Overdrive". So don't be so quick to judge them or pass them off as useless.

Seria got 100% shafted in terms of LS compared to Karl (Ultor has a better LS than her), but she could make a good sub Fire unit if you're lacking one. So no, she's not OP in the slightest sense of the word.