Mori : Polish and Italian descent, a self-described mutt
Gura : Mother is Greek/Jewish, father is white American
Irys : her dad is Asian (not white) she's half Japanese and half some other Asian
Fauna : Scottish ancestry
Mumei : Dutch ancestry
Fuwawa & Mococo : Swedish and Irish ancestry (self admitted in old PL comments)
Nerissa : Irish ancestry
Shiori : Filipino descent (she said as much in old PL comments do your reps)