Hehe... This is a fun one..
Wren - Afraid of Trojins
Demi - Afraid of Mangets
Chaz - Afraid of Acne XD , But seriously.. I truely think that Chaz was afraid of getting lost in his journy toward manhood. When Alys told him he had to carve out his own destiny, you could almost see how wounded Chaz was. Then when Lew-Ars told Chaz he would defend Algo, Chaz snapped then later admited that he had no idea what to do.
Rune - Afraid of carrying any sheild more powerful than Psy.. Honestly... Would it kill you to carry a gaurdian sheild?
Kyra - Afraid of asking for help
Raja - Afraid of a tough comedic crowd
Seth - Afraid of being caught
Hahn - Afraid of being wrong
Rika - Afraid of being alone
And last, but most certainly not least...
Alys - Afraid of failing to defend Motavia from the plauge of monsters that over-run it.