Giants and other large races make excellent bodyguards, serving all manner
of masters. They excel in this career not because of any altruistic
tendencies or protective instinct, but because of their sheer size and
tendency toward blind loyalty. Bodyguards have a fanatical devotion to
their masters, and will often fling themselves blindly into harm's way
without thinking twice.
This is a Prestige Class for Warriors, and they retain the original class's Prime Requisite,
in this case, Strength. Bodyguards often become Berserkers after the death
of a particularly beloved master, albeit at a higher level than a normal
Warrior. They can become Paladins earlier than warriors can.