AU Information: Personas.
Here is the info on Minato's Personas. Unlike in canon, he cannot wield twelve of them; that'd be fracta_anima's claim to fame. Just two. Thanatos, awoken unnaturally, and Samael, awoken semi-naturally.
Battle Information
Main Weapon: Guns (usually pistols).
Secondary Weapon: One-handed swords.
Attack Type: Pierce (guns) | Slash (swords).
Primary Persona
Persona: Samael. Level: 50
Arcana: Death.
Compendium info: "A mysterious angel known as the 'Poison of God', often depicted as a serpent. Opinions differ on whether or not he is fallen, but either way, he is associated with death."
Misc. Info: Minato's Samael is, obviously, not the canon default. It has been changed to reflect Strega's Personas being taken into account and Minato himself. He can switch between it and Thanatos at will, but he prefers to use Samael, as it is safer than the volatile Thanatos. However, he is not safe if he isn't taking his Suppressants, no matter which Persona he equips: both will attempt to kill him.
Strengths and Weaknesses:
Resist: Ice, Electricity.
Block: Darkness.
Weakness: Wind.
Skills:
Current roster: Recarm, Mediarama, Bufudyne, Ziodyne, Garudyne, Marakukaja, Masukukaja, Matarukaja.
Secondary Persona
Persona: Thanatos. Level: 50
Arcana: Death.
Compendium info: "The Greek god of death, he is the son of Nyx and the brother of Hypnos. He is depicted as a young man with an inverted torch and a wreath of butterfly in his hands."
Misc. Info: Minato's version of Thanatos is special, because it's Bufu-based instead of simply using physical and Mudo skills. On top of this, it's weakness to Light or Hama-skills has been removed and replaced with a weakness to Fire and Pierce Damage. However, his Thanatos is something of an unruly Persona: it doesn't always obey him if he isn't careful with his emotions. As such, though it is his stronger Persona of the two he has, he tries not to use it.
All Physical skills used from Thanatos cost 20% more HP than normal.
Strengths and Weaknesses:
Resist: Slash, Strike, Light.
Reflect: Darkness, Ice.
Weakness: Fire, Pierce.
Skills:
Current roster: Bufudyne, Brave Blade, Mabufudyne, Megidola, Mind Charge, Spirit Drain, Mamudoon, Mahamaon.