Chancellor of the Faithful Blades, Aramok Botheris, High Commander of the Order of Seekers.
A stout man of 50 winters, he is usually in ceremonial plate at the least, full armor should he be leading the militant arm of his faith, or members of the Holy Order of Seekers, which it a multi-faith organizations of Paladins, Crudsader-Knights, and various forms of marshalls, warcasters and war healers. Aramok is 5'10", broad-bodied, with a heavy mustauche, many scars, and his god's holy symbol branded into his forehead. Whatever he wears, it is covered by a white, blue and gold tabard with the image of an black eye, a lit flame as it's iris, surrounded by the symbols of the gods accepted by the Holy Order of Seekers, with the bearer's personal god topmost; and amulet of a sword's hilt; and a great gold and silver metal sash set with topazes and sapphires. In the case of Aramok, it would be the most militant LG, NG, or LN god of your campaign world.
Aramok is frequently sent on behalf of his faith as a diplomat, as he has held his position for 2 decades, is considered uncorruptible by the triad of leaders above him, and has a keen tactical sense from his adventuring and warring days, and organizational knack thanks to his current appointment as head of the Order of Seekers.
Aramok is stiffly formal in any open meetings, saying what needs to be said, and nothing more. While a stout defender of his god, and all the gods of the Order of Seekers, Aramok is difficult to goad, even with religious blaphemy. Constant attempts to draw him out in group sessions will garner the offender nothing but a "accidental" slip by Aramok of some bit of knowledge or heresy regarding the verbal attacker. Aramok, always deftly apologizes to his hosts thereafter. Behind closed doors, Aramok is willing to provide information to those he trusts, but to him, trust is a many-leveled castle, and and you will only get as much truth as he feels you are ready for.
The Holy Order of Seekers: This multi-faith organization is a group which seems to sponsor interfaith association and collaboration to fund adventuring groups focused on finding and destroying undead, aberrations, and rooting out monsters which control the mind. While it's fortunes and presence have waxed and waned over the centuries, it seems a simple order of often paladin-centric crusaders for right and good.
The Order's true name is The White Order of Seekers in Darkness. Founded by a prophet among the ancient sorcerer kingdoms, it may be roughly as old as Congenio Ioun, though distant enough not to be easily recognized by him. The prophet in question was an astronomer and astrologer who forsaw a terrible cataclysm brought about by tripartite forces: Undead, Aberrations, and Psions.
Unable to convince the rulers of the day, he instead founded a secret order, inviting the mightiest holy warriors to carry on in secret through the millenia, giving to them star charts that would tell them when the key points in the coming cataclysm would arrive. At those times, the heads of the order would reinvigorate the order, gain members, and help vanguish the turning points, hopefully weakening the eventual enemies that would bring the cataclysm. Otherwise, they would remain in secret, and once a foe was defeated or artifact destroyed, they would lapse again except for a few key members to pass on the knowledge.
The Order has likely been following the surge in near-cataclysms in the world and grwoing it's membership among all the goodly militant faiths. Members of the order come in two ranks, lesser (who, while members, know little of the history, but are trained to fight the Order's foes in the best methods available), and High. High members compromise perhaps 2 handfuls in the world, and have been tested for their trustworthiness via many methods before being included in the ancient counsel of the prophet. They come from various backgrounds, and many different faiths, thus the Order maintains a broad network of informants among different faiths who, after having been initiated to the Order, consider the safety of the world primary, even above telling their supperiors in their respective churces the truth of the Order.
High members are distiguished by their Sword Hilt Amulets, which are attuned to each bearer individually, allowing the bearer to create a blade of force equivalent to a +5 weapon that can cut through Force effects given enough time.
Aramok also wears the Mantle of the Prophet, the metal sash which acts as an intelligent artifact, wherein the souls of each of the prior High Commanders of the Order dwell, to pass on their insights to the next throughout the ages.
The Seekers are a primary foe to the major enemy forces in my campaign, and are made up of heavily multiclassed individuals: using an alignment variable paladin class of my own devising, Sorcerers, Psions (what better way to fight psions), Marshalls, and various PrC that focus on melding fighting and the supernatural, or targeting undead, aberrations and psionic creatures (Lords of Madness has a great selection of such).
Aramok would be just as heavily multiclassed as the rest of the order, though possibly with a few levels of cleric due to his position within his primary faith.
Enjoy!