Is hampa's hair supposed to look like this or is this just my client goofing?

Nothing looks wrong to me.

-IF you are talking about the size etc, it's a custom hair made for hampa. Every player can forge hairs (ctrl+o) but only particular staff can use the hair they made.

-IF you are talking about the vague glitchiness, it's normal. As jusmi said, hair's are still not completed, therefore they tend to glitch.

I'm almost 100% sure it's Centurion.

Yeah, it is.
The hair hampa has on is Centurion, he's had it for quite a while. I think a week or two after hairs came out.

That's weird, it just showed up today... :O

... It's been there for months. I saw it back when hampa ran a bug testing server in December.

Dranix also have it, dl and lp him

Yoyo said the centurion and The hair hampa has are 2 different types of hair.

/offtopic
I heard there are 2 Centurion Hairs in toribash. If one belongs to hampa, what about the other one?

._.