Guil as they’ll look progress through the neutral(profiteer) path of the Bard class(Bard->Hero->Legend).
Guil will also have a “villainous” path available though his differs from the base class progression for the Bard class(Bard->Heretic->Inciter) His will be (Bard->Hero->Heretic*). His Heretic class will be better than the usual Heretic will be.