Irvine Kinneas
Squall
Rinoa
Quistis
Zell
Selphie
Irvine
Laguna
Kiros
Ward
Seifer
Edea

Irvine's Vital Stats by Level
Level
HP
Str
Vit
Mag
Spr
Spd
Luck
1
213
19 
13 
10
579
8
21 
14 
20
977
14 
12 
14 
11 
23 
15 
30
1367
20 
16 
20 
15 
25 
15 
40
1750
25 
20 
25 
19 
27 
17 
50
2124
30 
23 
30 
22 
29 
17 
60
2491
34 
26 
33 
25 
31 
18 
70
2850
37 
28 
36 
27 
33 
19 
80
3202
40 
30 
39 
28 
35 
20 
90
3545
43 
31 
41 
28 
37 
21 
100
3880
45 
31 
42 
28 
39 
21 
Irvine's Limit Break: Shot
When in trouble, Irvine loads his weapon with special ammunition and assults his opponents with a hail of bullets.  After selecting shot, choose the type of ammo you want Irvine to use.  Consider your enemy before choosing.  Do you need the wide-spead damage of Shotgun Ammo, or a poweful punch against a tough beast?
When the Shot Limit Break begins, two windows appear.  The one on the left shows which enemy(s) you're targeting.  Move the cursor up and down to switch targets while shooting.  The window on the right indicates how much ammo is remainin, and the time before the Limit Break ends.
 
Normal Ammo (Normal Shot) Inflicts a moderate amount of damage on one enemy, and reloads at an average speed.  You can shift your aim between several targets while using this type of Ammo.
Shotgun Ammo (Scatter Shot) Similar to Normal Ammo, Shotgun Ammo hits every enemy on-screen with each shot.
Dark Ammo (Dark Shot) Similar to Normal Ammo, but each time you hit an enemy you have a chance of causing several abnormal status effects (Sleep, Blind, Poison, Silence, etc.)
Fire Ammo (Flame Shot) This fire elemental ammo causes damage to all enemies on-screen.  Effective against enemies weak against fire, but doesn't work well on enemies reistant to fire magic.  It will heal enemies that absorb fire magic.
Demolition Ammo (Canister Shot) Although it has a slow load time, it packs a strong punch.  Its downside is that you can only target one enemy at a time, although you can still cycle through targets.
Fast Ammo (Quick Shot) Think machine gun.  It's not very strong, but you can quickly unload about 25 rounds into a group of enemies.  This ammo's speed makes up for its lack of power.  Just make sure you have a healthy supply, or you'll quickly run out.
AP Ammo (Armor Shot) Armor Piercing (AP) Ammo is much better than the similar Demolition Ammo.  It's stronger than Demolition Ammo and the firing rate is much faster. 
Pulse Ammo (Hyper Shot) This is by far the best ammo you can find.  It causes maximum damgae to a single enemy, and has a great firing rate.  Unfortunately, it's difficult to come by.
You can find, buy, or refine ammo.  You need to refine most of the good stuff from rare items.  Just make sure you keep an ample supply around, because you don't want want to run out in the middle of the critical battle.
Ammo-RF List
1 Screw = 8 Normal Ammo
1 Normal Ammo = 1 Fast Ammo
1 Shotgun Ammo = 2 Fast Ammo
1 Bomb Fragment = 20 Fire Ammo
1 Red Fang = 40 Fire Ammo
1 Fuel = 10 Fire Ammo
1 Poison Powder = 10 Dark Ammo
1 Venom Fang = 20 Dark Ammo
1 Missle = 20 Demolition Ammo
1 Runnin Fire = 40 Demolition Ammo
1 Cactus Thorn = 40 Demolition Ammo
1 Sharp Spike = 10 AP Ammo
1 Chef's Knife = 20 AP Ammo
1 Laser Cannon = 5 Pulse Ammo
1 Energy Crystal = 10 AP Ammo
1 Power Generator = 20 Pulse Ammo
Irvine's Weapons
Valiant
Cost: 100 Gil
Atk: 12
Hit: 105
Items Dropped By Stolen From Card Mod
Steel Pipe (x1) Wendigo (rar), GIM47N (Level 1-29, rare) Wendigo Elastoid (1 for 1)
Screw (x4) Geezard, GIM47N (rare) Geezard  Geezard (1 for 5)
Ulysses
Cost: 200 Gil
Atk: 15
Hit: 108
Items Dropped By Stolen From Card Mod
Steel Pipe (x1) Wendigo (rare), GIM47N (Level 1-29, rare) Wendigo Elastoid (1 for 1)
Bomb Fragment Bomb Bomb Bomb (1 for 1)
Screw (x2) Geezard, GIM47N (rare) Geezard Geezard (1 for 5)
Bismarck
Cost: 400 Gil
Atk: 20
Hit: 110
Items Dropped By Stolen From Card Mod
Steel Pipe (x1) Wendigo (rare), GIM47N (Level 1-29, rare) Wendigo Elastoid (1 for 1)
Dynamo Stone (x4) Blitz (Level 30-100) Elastoid (Level 1-29) Blitz (1 for 1), Quezacotl (1 for 100)
Screw (x2) Geezard, GIM47N (rare) Geezard Geezard (1 for 5)
Exeter
Cost: 800 Gil
Atk: 25
Hit: 115
Items Dropped By Stolen From Card Mod
Dino Bone (x1) T-Rexaur T-Rexaur T-Rexaur (2 for 1), Armadodo (1 for 1), Sacred (1 for 100)
Moon Stone (x1) Elnoyle (Level 1-39, rare), Imp (Level 40-100), Torama (Level 40-100) Elnoyle N/A
Star Fragment (x1) Iron Giant, T-Rexaur (rare), Tri-Face (Level 30-100, rare), Chimera (Level 20-100, rare), Hexadragon (Level 30-100), Red Dragon (Level 1-44, rare) Iron Giant Iron Giant (3 for 1)
Screw (x18) Geezard, GIM47N (rare) Geezard Geezard (1 for 5)