Pamela is the next promo and she has a powerful rush, 3 turn taunt to 2 is not joke and on a DEF or ATT team could lock down those characters. Elusive is a great bonus if you run a shield and she will work great next to the recently released Eric.
Some downsides are her leader skill and that her active could pop when you wouldn’t want it to. But she makes up for it with a good base attached weapon and being a generation 2 6* she also boasts the highest DEF stat in the game.
Pamela, would she work for you?