Well the main people I use are Vaan, Balthier and Basch at lvls 63, 64, and 55 respectively, but I heard that he raises a anti-physical shield and the best Spell user I have is lvl 46 Ashe with Scathe.

Also, what are some good equipments to prevent damage and statuses during the fight, and are his special attacks elemental?

and Magus of Zeal, yes, the James thing happened. He got implants to win a bikini contest, the same way Ashe did.