Sazh – Commando Crystarium

Character Sazh
Role Commando
Sazh is an interesting Commando because of his two pistols. Each shot does less damage than other Commandos, but he gets twice as many, and they seem to build chains slightly faster as well. His Random: Instant Chain Ability also seems more likely to go off. (As you can see, I have a lot of certainty about these things...) Sazh's biggest advantage is his Blitz attack, which hits many times over a very wide area. However, he lacks some of the basic attack enhancing Abilities, such as Ravage and Blindside, and is the only one of the four Characters with Commando as a primary Role that lacks the Launch ability. Against any enemy where Launch is vital, such as Behemoths, this basically means Sazh can't be your lone Commando.
Compare Sazh – Commando Crystarium to other Crystariums

Related

Sazh

Eidolon Brynhildr (Chapter 8)
Base HP 220
Maximum HP 27,000
Base Strength 12
Maximum Strength 1,001
Base Magic 12
Maximum Magic 1,000
Starting Weapon Vega 42s
Primary Roles Commando, Ravager, Synergist
Accessory Crystal Synergist 4
Accessory Crystal Commando 8
Accessory Crystal Ravager 10
ATB Level Crystal Synergist 8
Chapter 1

Fang – Commando Crystarium

Character Fang
Role Commando

Hope – Commando Crystarium

Character Hope
Role Commando
Hope's biggest disadvantage as a Commando is his low strength stat, but then, he gets Ruin right away so that shouldn't be a big issue. In fact, Commando can be very effective for Hope against enemies that are weak against Magic but resist most Elements. He lacks many auto Abilities, notably including Launch, making him a poor choice as your lone Commando, but then, you're not likely to use him in that Role.

Lightning – Commando Crystarium

Character Lightning
Role Commando
Lightning is an effective Commando, lacking only the Adrenaline and Deathblow auto Abilities. She's your most effective Commando until Fang shows up, and remains powerful until late in the game, though her low HP total does become an issue against the most powerful enemies out there.

Sazh – Medic Crystarium

Character Sazh
Role Medic
Sazh never gets access to Raise, but don't let that fool you into thinking he's a bad Medic. He doesn't get Curaja (that's reserved for Vanille and Hope), but he does get Curasa, making him an effective healer through endgame fights. That said, he won't get Curasa until Crystarium stage 9, and it's quite expensive.

Sazh – Ravager Crystarium

Character Sazh
Role Ravager
Sazh has no access to Blizzard or Water Abilities, but he does have all three tiers of Fire, Thunder, and Aero spells, along with the relevant -strike Abilities. He does oddly lack the Vigor auto Ability. His Cold Blood special attack will build the chain gauge of staggered opponents quite rapidly.

Sazh – Saboteur Crystarium

Character Sazh
Role Saboteur
Sazh is a very effective Saboteur, gaining access to every single-target debuff in the game. In fact, he's one of only two Characters that can inflict every possible status ailment (the other being Hope). Because he relies on single-target debuffs, he's not very effective against groups, but then, Saboteurs are generally most important against singular, powerful enemies anyway.

Sazh – Sentinel Crystarium

Character Sazh
Role Sentinel
Sazh is all about defense as a Sentinel. That may seem to go without saying, but he doesn't get any evasion Abilities, and while he does get Vendetta he does not get Entrench or the Counter auto Ability. He also doesn't get Mediguard, so if Sazh is your defender, you'll need to keep an eye on his HP. He does have the second-highest HP total in the game, though, and is the only non-primary Sentinel with Challenge.

Sazh – Synergist Crystarium

Character Sazh
Role Synergist
It takes him a while to get there, but Sazh is the most complete Synergist in the game. He and Hope have very nearly the same set of Abilities, though Sazh gets Vigilance instead of Veil. However, Sazh will first gain access to offensive buffs like Bravery, Faith, and En-spells, making him the offensive Synergist for the first nine chapters of the game.

Snow – Commando Crystarium

Character Snow
Role Commando
As Commandos go, Snow is pretty effective, lacking only the Lifesiphon and Faultsiphon Abilities. It can be difficult to actually use him as a Commando much earlier in the game, since he's so effective as a Sentinel, but he'll get the job done. His Sovereign Fist Ability clears the chain gauge and deals massive damage, so it's best used near the end of an enemy's stagger period (and preferably with a Genji Glove equipped).

Vanille – Commando Crystarium

Character Vanille
Role Commando
Vanille is the most limited Commando in the game (and has the silliest Weapon), lacking both Launch and Blitz. She does get Blindside and Faultsiphon, auto Abilities that are easy to take advantage of. However, her Role should generally be limited to that of a secondary Commando. She's more useful for the Augmented Attack effect than actual Commando Abilities.

Commando

Bonus Type Augmented Attacks

Sazh

Sprite
Unique Character
No. ✩ 30 Game FFXIII
Unlocked at Level
Gear Gun
Ability Pyroburst
The afro of this former airship pilot has taken on a distinctly chocobo stink of late.

Commando

Abbreviation COM
Role Bonus Augmented Attacks
Base Bonus (Self) Damage: +100%
Role Level I Bonus (Self) Damage: +110%
Role Level II Bonus (Self) Damage: +120%
Base Bonus (Allies) Damage: +5%
Role Level II Bonus (Allies) Damage: +8%
Role Accessory Berserker's Ruby (Grants Damage: +5% to self)

Sazh

Role Synergist
Grade 3–5
Strength 89
Magic 91
Maximum HP 1,336
Maximum Level 45
Descriptors Well-Grown, Flameproof, Fatherly
Feral Link Cold Blood (Deals damage and affects chain bonus)
Input Type Button tap
Command (PS3) Square & Circle (repeat)
Command (Xbox 360) X & B (repeat)
Downloadable Content Sazh: Heads or Tails?