It's a pretty name and has a cartoon spin that I like :)
I LOVE the name Fiona. I think it's definitely in the "fearless" category- strong, intelligent, but sweet. The similar name- Fionna- is the name of the female-equivilent main character from the cartoon Adventure Time, and this name cojures the perfect image of her- a tough, curious, fun little adventurer...
Some other "F" names for girls that i love...
- Faith (the kick-butt slayer from Buffy)