It does seem kind of pervy that people keep calling Killy Daddy.
I…. I really don’t know how Echo turned out like this, lol.
Killy is the (extremely unwilling) “Dad” of the three because he was resurrected first and thus has been a guardian the longest! Echo was next, then Gideon. Killy was tasked with training them as an attempt to get him to take his responsibilities more seriously. (A terrible idea really.)
In terms of age when they first died, then Gideon’s the oldest, followed by Echo and then Killy. XD