Jaqar is the son of Viktoria and an outside male, and is the brother of Hilkka.
Jaqar's personal philosophy seems to be somewhere between "seize the day" and "no regrets." If something sounds interesting, he'll do it - danger, mess, embarrassment, or consequences be damned. This, combined with his overall friendly charm, makes him simultaneously a joy to be around and also an absolute nuisance.
His best friend, FastĂșlfr, has the exact opposite energy of Jaqar's breathless enthusiasm, and very often the two manage to balance out each other's extremes.