AAA!
How do you do that?

You'll laugh if I tell you how. But I'll answer honestly – I flip a coin and assign the role that comes up on the coin to that character.
That's why I don't post my table, so as not to amuse people prematurely.

he could be a checker, a dryad (if caught in a hunter's trap),
a defender, any kind of killer.
A pretty wide range.
Or am I missing something?

And you also need to be very "lucky" to choose the one character out of 21 who is caught in the trap.
By the way, I saw here... the Paladin doesn't pierce natural defense? Well, maybe there really are more than two roles for the 255th character. In general, I'll read the set again, rework my table, and look at other people's tables with interest.