Insecure Seeq from Archades hires you for this hunt. You can find him in Technicks Shop there.
About 65 000 HP
Resistant to Libra,
Vulnerable to Water
Smite of Rage,
You can find this enemy in the southern part of Sochen Cave Palace. Additionally in this fight you'll be supported by the petitioner, but (as always in such situation) he's not much of use in the fight and don't worry when Overlord kills him.
This enemy is pretty darn strong. Except for powerful attack like Tri-attack (strong attack aimed against single hero, which may also cause Slow), Rage (deals damage to everyone standing around Overlord), Smite of Rage (very strong attack, but very slow too against one character) and Pyromania (deals fire elemental damage to everyone in range) he can create long and fast combos out of ordinary attacks and may kill one of your party members in just a blink of an eye. Fortunately he has small amount of HP so you should be able to defeat him pretty fast.
Bounty: 3500 gil, 2x Hi-Ether, Teleport Stone