Being a member of the Order of Judges of the Imperial Archadian Ministry of Law, and Judge Magister of the 9th Bureau. The 9th Bureau, led by Gabranth, is primarily concerned with the gathering and dissemination of information. As a result, many of the bureau's activities are shrouded in secrecy. Gabranth, and his power, are respected by other Judge Magisters, and Emperor Gramis himself places great faith in this younger Judge.
During the first battle, if Basch is in the active party, a cutscene will play when Gabranth reaches 50% HP. After the cutscene Gabranth will become immune to magicks for around 2 minutes.
Basch is the main target so the player should make sure he is well-protected. Gabranth uses all-out sword attacks, like Guilt, which can cause heavy injury. Gabranth lacks a single deadly move, but has deadly combo attacks.
The player should cast Protectga, and Haste also helps. Gabranth's attacks are strong, but they are all physical attacks meaning they can be defended against. After Gabranth becomes immune to magicks the player should use this time to reapply buffs or attack him with weapons.
The second battle is harder because Gabranth will use Innocence, a strong attack with incredible range. At 50% HP, a cutscene between Gabranth and Basch (if he is in the party) will begin. Right after Gabranth casts Renew, he will use Innocence. When his HP reaches 25%, his Defense increases and he will constantly use Innocence. His attacks get faster and deadlier and he hits combos more often.
The party should start by dispelling Gabranth's Haste and Protect.
After Gabranth hits 50% of his HP, the player must dispel Gabranth again and get ready to use Curaja to combat the Innocence he will use after using Renew. During Gabranth's final quarter of HP the player can use a Quickening chain and finish him off.
Gabranth is fought in Stage 100 of the Final Fantasy XII International Zodiac Job System Trial Mode. He is fought alongside the other four Judge Magisters. Gabranth, along with Bergan, focuses on damaging the party with physical attacks. He will use some special attacks that damage all party members in range, and uses Enrage at low HP. Zargabaath casts Bravery on him, which should be dispelled to lessen his damage output.
If any party members are in Reverse, Gabranth will use X-Potions on them, dealing 1500 damage. Gabranth uses Elixirs on Zargabaath when he is on low HP, and is likewise healed by Zargabaath when his HP get low.
The easiest way to break through Gabranth and Zargabaath's healing is by casting Sleep on Zargabaath, making him unable to heal Gabranth. The player should then quickly dispatch Gabranth and take out Zargabaath thereafter.
Since Gabranth has a high chance of blocking attacks, it's recommended to use the Cameo Belt accessory. Since he can do massive combo hits when on low HP, it's also a good idea to take him out quickly. If the player lacks strong weapons, they can steal a Tournesol from Gabranth and equip it to a Knight for high damage output. The Exposetechnick can reduce Gabranth's Defense so he takes even more damage.
It's also possible to use the Wither technick to halve Gabranth's Strength with every successful use. After just a few uses, Gabranth will only be able to deal little damage. Gabranth is vulnerable to Slow, which one may exploit to reduce his damage output. However, once Gabranth uses Enrage, his attacks no longer require charge time and so Slow no longer has any effect.