Ark Knight

Arc Knight is an enemy job class in Final Fantasy Tactics. This job focuses on destroying opponent's morale, either by destroying equipment, or turning units against themselves.

Both Elmdor and Zalbag have this job class. While their first command abilities differ, they both have the Blood Suck command.

There is also a version of Delita as an Arc Knight (via Gameshark) but its abilities are the same as the Divine Knight.

Elmdor
''Holy knight who follows God's word. His Sword Spirit releases a spirit wave from within the sword.''

Zalbag
''Holy knight who follows God's word. His Destroy Sword destroys not only the enemys' body but also their belongings.''

Sword Spirit
Elmdor's Sword Spirit is exactly the same as the Samurai's Draw Out ability.

Reaction Abilities
Elmdor

Zalbag

Support Abilities
Zalbag

Elmdor

In the NTSC-J version, Elmdor has Maintenance.

Blood Suck
Blood Suck simply turns a character undead, forcing them to attack allied units.