Hi.
To me this story is also about family and friendship. It all starts with a "bunch of misfits", civilians and soldiers alike, who tried to survive together as a team. And although things have fallen appart and the original group of survivors was torn apart, in the end they stuck together and were able to survive as a team of friends who besides all doubts have supported each other until the last moments of the story.
It has shown already when
Riley and
Angel searched for
Datu; their task was supported by
Burt,
Saul, and
Michael who saved them. Another big moment was when Michael took the lead after Saul has organized the trade with
Scratch (arguable). Things like that go on and on through all seasons of the story.
And in the end the friendship has been fixed in the person of Nicholas, who - by the words of Kc himself - gathers bits and pieces from all the friends' personalities; this makes them more then friends, somehow they have become a - odd - family.
So, trust and bond: I think that's what is behind all those relations between the figures.
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