Actually seeing this thread reminds me of how last night while some friends and I were watching the original Teen Titans cartoon that was out in the early 2000's I was thinking of a crossover for that. Lalli would be raven, quiet and stoic magic types who like to sulk and aren't big on human contact. Reynir would be Starfire, naive and happy upbeat redheads with some pretty long hair who are big on friendship and making sure everyone's happy. In this case Kitty would be Silky. Maybe Sigrun would be Robin, the leader who's really skilled at hand-to-hand combat due to being rigorously trained at it from a young age, sometimes a bit reckless in their leadership but they care about the teams they lead and are pretty protective of them. Maybe Tuuri would be Cyborg, the team mechanics and team drivers who despite having some pretty sad stuff in their backstories are pretty upbeat and friendly. This is kind of a stretch but maybe Mikkel would be beastboy, they're both the jokesters / tricksters of the group, and both have a fondness for food and cooking while the rest of the team doesn't appreciate their cooking that much
. I really don't know who Emil would be, maybe Terra, gorgeous long blonde hair, and both sad insecure little babies trying their best but things still aren't going over pretty well for them no matter how much they try.