EXPAND YOUR CLOSED VIEW ON WHAT A DARK KNIGHT CAN BE
No really, if you take a minute you'll realize that dark knights, in one form or another have:
Health draining
Mana draining
Debuffing
Darkness themed abilities
The ability to become a zombie
The ability to focus our inner darkness
Use our own "lifeforce" to augment our abilities.
"Aether refers to the energy found throughout the world of Hydaelyn in Final Fantasy XIV. It is source of both magic and life, and any disruption in the aetherial flow is either the cause or indicator of catastrophic events, as evidenced by the Umbral Eras." - http://finalfantasy.wikia.com/wiki/Aether
But no.
You're right. Dark Knight has nothing in common with how dark knights are in other games.
