For example, as a level up advancement benefit, any character can gain +1 to any two Defiances. (They start at 0, even for a negative statistic.)

One benefit the Fighter can start off with is Block & Duck:
>Block & Duck — Once per scene you can Defy with Forceful without spending Defiance.

An advanced move that the Fighter can take is Anti-Magic Training:
>When you Defy magic the first time each scene, it costs no Defiance.