Orange Star

Andy

Mechanics
Waking up early
No weakness or strengths
CO Power: Hyper Repair
Restores 2 HP to all Andy's units
All Andy's units get a +10% defense boost
Super Power: Hyper Upgrade
Restores 5 HP to all Andy's units
All Andy's units get a +20% attack boost
All Andy's units get a +10% defense boost
All Andy's units get +1 movement range

Sami

Double Time

Victory March

Max

Weight Training
Studying
Non-infantry direct combat troops are top-notch with +20% offensive power, but indirect combat units have a -1 attack range and -10% firepower
CO Power: Max Force
Max's non-infantry direct combat units get +20% attack boost and +1 movement range bonus
All units get +10% defensive bonus
Super Power: Max Blast
Max's non-infantry direct combat units get a +40% attack boost and +2 movement range bonus
All units get a +10% defense boost

Nell

Willful students
Downtime
She is lucky, meaning that her units can deal up to +2 attack. (add randomly from 0% to 10% to the damage previewd)
CO Power: Lucky Star
Nell's units have an improved chance for harder hits (she gets more lucky)
Defense of all units get +10% higher
Super Power: Lady Luck
Nell gets even luckier, and her units can deal a lot more damage!
Rises defense of all units by +10%

Hachi

Tea
Medicine
Units can be deployed with 90% of the normal price
CO Power: Barter
Deployment cost lowers even more - to 50% of the normal cost
All units have their defense improved by 10%
Super Power: Merchant Union
Deployment cost lowers even more, to 50% of normal cost
Hachi can deploy ground units from his army's cities
Improves defense of his units by 10%

Blue Moon

Olaf

Warm boots
Rain clouds
No terrain penalties in snow, but rain penalizes him as much as snow would do to any other CO
CO Power: Blizzard
Snow covers the map for 1 day
Defense of his units rise by 10%
Super Power: Winter Fury
Snow covers the map for one day
All enemy units are dealt 2 damage
Olaf's units get +10% defense

Grit

Cats
Rats
Indirect units have +1 range and +20% attack boost, but direct combat units are 20% weaker offensively
CO Power: Snipe Attack
All Grit's indirect units get +1 attack range and an attack power boost of +30%
All Grit's units get a defense boost of 10%
Super Power: Super Snipe
All Grit's indirect units get +2 attack range and a +30% attack power boost
All units get a +10% defense boost

Colin

Olaf and Grit
Black Hole
Colin can deploy units for only 80% of their price, but his units have a 10% attack power penalty
CO Power: Gold Rush
Colin's funds are multiplied by 1.5
Defense of his units increase by 10%
Super Power: Power of Money
Colin's units get a power boost proportional to his current funds; for each 300G he has, there is a 1% attack boost (so, the attack power of his units is doubled when he has 30,000G). Note that the money is NOT used up.
All units get a +10% defense boost, regardless of money

Green Earth

Eagle

Lucky goggles
Swimming
Air units use 2 less fuel per day, and have a superior attack power of +15% and defense of +10%
Naval units have a 30% attack power penalty
CO Power: Lightning Drive
Eagle's air units get an attack boost of +15% and defense boost of 20%. Other units get only a +10% defense boost.
Super Power: Lightning Strike
Eagle's air units get an attack (+15%) and defense (+20%) boost; other units get a +10% defense increase.
All of Eagle's non-Infantry units that have carried out orders this turn can move again

Drake

Open sea
High places
Naval units get +1 movement range and +10% defense bonus; however, air units attack with 30% less power.
All units are immune to rain movement penalties
CO Power: Tsunami
All enemy units lose 1HP and half of their fuel. Drake's units get +10% defense.
Super Power: Typhoon
All enemy units lose half of their fuel and 2 HP.
Drake's units get +10% defense.
Brings rain to battle for one day.

Jess

Dandelions
Unfit COs
Vehicles have an improved attack power of 10%, but all other units are weakened by 10%
CO Power: Turbo Charge
Jess's vehicles get +1 movement range and an attack boost of +20%. All units get +10% defense.
Fuel and ammo is replenished for Jess's units
Super Power: Overdrive
Jess's vehicles get +2 movement range and an attack boost of +40%, and all units get +10% defense.
Fuel and ammo is replenished for Jess's units

Yellow Comet

Kanbei

Sonja
Computers
Kanbei's units cost +20% to be deployed, but they are +30% powerful in both offense and defense.
CO Power: Morale Boost
Kanbei's units get an attack boost of +20% and the usual +10% defense.
Super Power: Samurai Spirit
Kanbei's units get an attack (+20%) and defense (+30%) boost. Note that a 10HP unit in a 4-stars terrain (mountain, HQ) will always take NO DAMAGE while this Super Power is active. Regardless of enemy CO. Regardless of unit.
Kanbei's units' counterattack damage is multiplied by 1.5

Sonja

Computers
Bugs
All units have +1 vision range and their HP is hidden from foes. However, Sonja suffers from bad luck (damage percentage can be reduced by up to 10%). Counterattacks from her units are 1.5x stronger.
CO Power: Enhanced Vision
Sonja's units get +1 vision and can see into non-adjacent woods and reefs, and +10% defense.
Super Power: Counter Break
Sonja's units get +1 vision and can see into non-adjacent woods and reefs
Sonja's units ALWAYS attack first, even if it's the enemy's turn, like if was her turn.
Defense of all units is improved by 10%

Sensei

Lazy, rainy days
Busy malls
Power boost for soldiers (+40%) and Battle Copters (+50%), transport units get +1 movement range, and vehicles and naval units have their attack power reduced by 10%.
CO Power: Copter Command
Sensei's B-Copters get an attack boost of +25%
Sensei's units get a defense boost of +10%
9 HP Infantry units spawn on all of Sensei's empty cities; they can be moved that turn
Super Power: Airborne Assault
Sensei's B-Copters get an attack boost of +25%v Sensei's units get a defense boost of +10%
9 HP Mech units spawn on all of Sensei's empty cities; they can be moved that turn

Black Hole

Flak

Meat
Veggies
Flak's units can have either good or bad luck - they sometimes deal more damage than stated in the percentage, sometimes less. His bad luck seems to appear more often. The range seems to be from -1 to +1 HP damage.
CO Power: Brute Force
There is an increase in dispersion rate, meaning that Flak's units can do super strong blows or little damage randomly. Also, all units get +10% defense.
Super Power: Barbaric Blow
An even higher increase in dispersion rate happens, so there can be even more damage or almost no damage at all. His units get +10% defense.

Lash

Getting her way
Not getting it
Lash's units get as much firepower bonus as defense bonus from terrain defense stars. She has no weakness.
CO Power: Terrain Tactics
Movement cost over all terrains drops to 1 in both clear and rainy terrain; no effect in snowy days. Regardless of weather, all units get +10% defense.
Super Power: Prime Tactics
Doubles terrain bonuses for Lash's units
Defense of all units rise by 10%
Drops movement cost over all terrains to 1 for Lash's units (except in snow)

Adder

His own face
Dirty Things
Adder actually has no strengths or weaknesses; however, both his CO and Super powers need very few stars (activation cost) to be charged.
CO Power: Sideslip
Adder's units get +1 movement range and +10% defense
Super Power: Sidewinder
Adder's units get +2 movement range and +10% defense

Hawke

Black coffee
Incompetence
All of Hawke's units have superior firepower (+10%). However, the amount of stars (activation cost) for his Powers is exceptionally high.
CO Power: Black Wave
Hawke's units regain 1 HP, while enemy units lose 1 HP. Hawke's units also get +10% defense
Super Power: Black Storm
Hawke's units regain 2 HP, while enemy units lose 2 HP. Hawke's units get +10% defense as well.

Sturm

Invasions
Peace
Sturm, the evil Black Hole CO, has very powerful units. They have +20% attack and defense ratings in relation to Andy and the movement cost in all terranis is of 1 (except in snow, in which he gets the same terrain penalties as the other COs). His only weaknesses are the absence of CO Power and an insanely high activation cost for his Super Power
CO Power: NONE!!!
Sturm's Super Power is THAT good
Super Power: Meteor Strike
Giant meteor lands on the battlefield and cause any units it hits to lose 8 HP, in a 5x5 diamond pattern. It DOES hurt allies (and his own units) too! It seems to be targeted on the group it can cause more money damage.
Sturm's units get an attack (+20%) and defense (+30%) boost.
Thanks to Lawrence for the new CO pictures.