In the latter half of the series of Senta and the Steel Dragon, there are three children in the Dechantagne household.  Augie and Terra Dechantagne and Iolana Staff.

Iolana and Augie make their appearance in book 3 as toddler and baby, and they are a bit older here.  This books marks the first appearance for Terra.

All three have larger parts in book 5, though they are still small.  All three play a large part in what happens after the series ends, so if I get around to writing the next series (which I’m already plotting out) you will see them again.