Loki's Twins

Birger Lokison and Ase Lokidottir, nicknamed Bai and Ace are obviously Loki's son and daughter. The youngest of their four siblings they are mere children when their father began mistreating them.

Fed up with how their father and grandfather treated them they ran, like their four older siblings. They fled to midguard, able to hide their parentage and odd abilities for a period of time.

Until their father attempts to rule midguard, that exposes Bai and Ace to Nick Fury. Obviously Fury isn't very happy with a so called mini Lokis running around amok.