Byblos is a boss fought at the Library of the Ancients. He fights using various status effects such as Toad, Confuse, and Web, strong attacks such as Wind Slash and Drain, and has access to Magic Hammer, the earliest point in the game where it can be obtained.
Byblos appears as the second boss of the Great Gubal Library.
Byblos is a special unit found at the end of Midlight's Deep, obtainable by completing the map with Byblos alive. It has access to four powerful abilities, all of which are exclusive to it.
Byblos appears with an ice-elemental card.
The use of Byblos in the Final Fantasy series derives from the Final Fantasy V boss that was fought in a library. 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.