Sierra's family, as of just around the start of Project Epsilon!

...I blame  tapewolf.
The moment he made me realise I could draw baby rainbow kangaroos I could not help myself.

From left to right:
Sierra, holding baby Charlie
his husband Jason (who's a rabbit-being)
their son Tango
and their daughter Echo!

Echo and Tango are twins - Echo's the older, barely, but Tango's headwings came in first. Hers prolly won't come in for another year or two.

With that many kids, the Den family is now the largest family in clan Hyth (which is only three families anyway).
Sierra has a plan for either branching a new clan or taking over the current clan, because boy does he not get along with Hyth. But he's got a short attention span, so at the moment he's far more obsessed with doting over his family.