Big thing preventing me from getting all the characters tagged here is the fact that Builders 2 reuses designs from Builders for certain characters. For example, Ameruda and Gillian have the exact same design (albeit implied to be related on some level). Thus, I can't tell here if it's Ameruda or Gillian sitting back there.

EDIT: Eru and Esther also look nearly the exact same so it's hard to tell which of them is here.