When Finn asked Ottar if Freya wants an all out war with Loki, Ottar was pretty scared at that time and Finn was super confident. I was really confused by why Ottar would be so scared at that time (Loki Familia's at that time only has 3 level 6s and the rest are level 5 bellow) so I see no reason why he would be so scared (I mean they have 1 level 7, 3 level 6s, 4 level 5s and so on) so It got me thinking that that level 7 guy was in Loki familia or something cause Finn knows where that guy is and he is probably the only one who truly knows that guy. I think he is Loki's second child before Riveria and Gareth. It's also stated that Loki and Freya familias are always equal but before Ais and the others leveled up, the Loki familia always looked very weak to me compared to the Freya familia.
If the other level 7 is from Loki, then Ottar being scared (if I say scared its probably meant as something like doubtful or doesn't want to do it) would make sense. Plus the three top Familias are Freya, Loki then Ganesha, If that guy was in other Familias then they would already be known by now.
-Just a follow up to my previous post, I don't want to comment this cause it'd be pretty hard to notice.