The state of a male characters beard determines their awesomeness in FFIV. Beard growing is different in that world; if you are awesome, you find it easy to grow a beard, it has nothing to do with genetics.

Cecil - Is the main character, and is therefore not allowed to have a beard, which exempts him from this rule. Seriously, find me one main in an RPG with a beard.

Cid - Has a brilliant beard, and is awesome.

Edge - Has no beard. Is ashamed of this, and wears ninja mask to disguise the fact. But we aren't fooled, Edge. We know you are not awesome enough.

Edward - Has no beard, and writes emo songs to lament this fact.

FuSoYa - Has an awesome beard, and is awesome to teh max.

Kain - Could have a beard if he wanted to, but it would fly up into his face when he peformed jump and obscure his vision, leading to an early, tragic and comical death.

Tellah - Has a sucky beard, which is nearly as bad as no beard.

Palom - He is FIVE.

Yang - Has a moustache. He isn't overly bright and got the rule wrong.

But seriously, what darksword 12 said seems pretty good.

YAY BEARD