FFT is one of those games that I play over and over again. The first time I fought Velius, my ass was kicked. He was insanely hard. In fact, my friend's first run through FFT was halted at that point because his party couldn't take him. Now, unfortunately, he dies within a couple moves. *sniff* But yeah, he just comes out of nowhere. FFT isn't all too hard of a game and Velius seems a bit out of place.
EDIT: Thunderforce IV, take your pick really. It's a game you play with gauss and vaseline on hand...to help afterwards.