Hmm...out of the guardian pixies, Athena is my favorite, she's adorrrrable. Out of the ones assigned to the winx, it's definitely Tune, she's so cute in her big dress. Out of the other ones I think Blinky/Glim is also really really cute.
Oh, and I was wondering, does anybody know if this pixie has a name?
She's adorable, she looks like a mini Diaspro.