In his own twisted Unseelie way, I think Bricriu was fond of Fi because she proved a worthy adversary, who constantly provided a challenge for him. He's a Spunkie who badmouths his own bosses cause he finds their methods "boring." But she always someone who played along with his games and had the brains to beat him with the full knowledge he'd return and she'd have to fight again. Given that his personality is like a psycho five-year-old on a sugar high, he must have found her mettle tantalizing.

Wish he was in her mp3...maybe the one who picked the music he wanted to listen too but his tastes were like Fi's...

Wish the series had Fi stay in it longer...