(This won't include everyone.... Just some characters...)

Aapo - claims it to be everyone, but if he's honest with himself it's the Native Canadian tribes...

Eruera - Mawake.

Gabor - all of his younger siblings. And Ixazalouh.

Hadwin - Chimalli. And to an extent Sochihiro...

Itzli - EVERY SIBLING HE KNOWS. DO NOT MESS WITH THIS MAN'S FAMILY!!!

Itotia - Sochihiro. (With a now growing protectiveness over Inteus...) 

Ixazalouh - pretty much everyone.... Though she seems to be particularly protective of those younger than her.

Kea - Wata

Mazatl - Loper and Mihil.

Nita - no one. (His reasoning: If he can't even protect himself, how can he protect others?....)

Shikoba - everyone. Though particularly those younger than him as well as very close relations (such as Ayi or Loper). 

Sochihiro - every family member he possibly can be. Mostly Xoc and Hadwin though....

Xoc - Marsilu, Chaos, Hadwin, and Sochihiro.