Byblos inflicts many status ailments, particularly confusion, but he also drains the party's MP with Magic Hammer and halves their level with Discord. He will occasionally counter physical attacks by casting Protect on himself, and counters magical attacks with casting Toad on the party.
When Byblos is at low HP, he will occasionally counter with Drain for approximately 300 damage.
The party should not attack him when Byblos is casting Drain at low HP, unless they can deal more damage than he can drain. A Black Mage and Mystic Knight should rely on Fira and other similar abilities to take advantage of its weakness to Fire magic. Using Ifrit in this battle is not recommended; although it deals a lot of damage, Byblos will counter Ifrit's attack by casting Toad and Confuse on a character.
Byblos appears with an ice-elemental card.
The name likely refers to the Byblos syllabary. Byblos syllabary, also known as the Pseudo-hieroglyphic script, Proto-Byblian, Proto-Byblic, or Byblic, is an undeciphered writing system known from ten inscriptions found in Byblos.
- Byblos makes an appearance in Final Fantasy Tactics as a playable character.
- If killed by the summon Ifrit, he will say, "Ifrit, did you?... the seal of the master will soon be blown wide open."
- If killed by any other way, he will say, "Soon, the seal of the master will be open."