Aokiji is a middle-row character, his primary attribute is wisdom and his basic attacks are physical
Vivre cards
Apart from various "Achievements" and "Tasks", there is currently no way of getting vivre cards for Aokiji. And since those vivre cards are far from enough, there is currently no way of obtaining Aokiji until further game updates that will give more possibilities (most likely future chapter 12 that might contains the Marine HQ fights). He costs 80 vivre cards, so he starts with 3 stars.
Skills
Ice Age(special skill)
Physical or elemental: elemental.
Range: one way, 5 meters.
Stun: 2-5 seconds.
Damage amplification: unknown.
Other info: Freezes enemies, rendering them completely unable to move or attack.
Ice Block: Partisan(second skill)
Physical or elemental: elemental.
Range: closest, one enemy.
Stun: unknown..
Damage amplification: unknown.
Other info: slows down enemy movement and attack speed for roughly 5-10 seconds, by half.
Ice Dragon(third skill)
Physical or elemental: elemental.
Range: closest, one enemy.
Stun: 2 seconds.
Damage amplification: unknown.
Other info: none.
Ice Time(passive skill)
Effect: decrease elemental defence for all enemies.
Other info: none.
Equipment
Equipment level 1 (White frame):
Equipment level 2 (Green frame):
Equipment level 3 (Green+1 frame):
Equipment level 4 (Blue frame):
Equipment level 5 (Blue+1 frame):
Equipment level 6 (Blue+2 frame)(unsorted):
Golden Crown
Equipment level 7 (Purple frame):
Shigure, Van Augur's Goggles, Lassoo, Boa's Snake Earrings, Gan Fall's Armor, Magic Wings
Equipment level 8 (Purple+1 frame)(unsorted):
PX's Clothes, Pirate Headband
Equipment level 9 (Purple+2 frame)(unsorted):
Horrible Mask, Mihawk's Hat, Tonfa with Iron Ball
Equipment level 10 (Purple+3 frame)(unsorted):
Ace's Hat, Dragon Wings, Pirate Headband