SonSon III is a little monkey girl who is the grand daughter of a character named SonSon, who starred in an old Capcom game with the same name. In the game, she tries to find out why her village was struck by an unknown illness. Sonson and her father are both based on Sun Wukong, the main character of the Chinese novel Journey to the West. Several of her attacks are derived from the series, such as the size-changing staff, or Sonson trying to cook her opponent in the Shinka Hakke Jin and turn them into sake. Though Sonson is a girl, she is named after her father and grandfather.
Sonson is a strong rushdown character with little need of mixup, for the reach on her attacks makes for good pros, and most of her specials can be used in midair. Her Gansai Hekiretsu is great for poking, and her speed enables for great movement unlike most characters. Unlike most speedsters, her health is at average at best(possibly referencing the original Sun Wukong having durability like stone), and she also has powerful combos and air combos/aerial raves. However, her more under-rated attacks can leave her open to punish, and she's not that spetacular in the bigger tournament scenes. An odd trait is that her cr.HK is not a sweep like most cr.HK attacks, but instead is her normal launcher(aside from all characters' df+HP's).
Gansai Hekiretsu: (Rock Smashing Wall Splitter) Sonson stabs her staff forward. Great reach and can knockdown down a good distance. Reference to SonSon's original attack used to destroy rocks.
Fuusetsuzan:(Wind Slicing Slash) Sonson drills her staff forward. Hitting multiple times if connects. Can also be done in the air.
Shienbu: (Little Monkey Dance) A reference to Wukong's magical hairs. Sonson rips out three strands of hair and shoots out three small monkeys from them. They travel straight across the screen(with two "circling" around the center one. Can also be done in the air.
Seiten Rengeki: (Equal-Heaven Chain Attack) Sonson spins her staff while flying upward. One of the few anti-air specials that can be super cancelled. Can also be done in the air.
Kingin no Hisago: (Gourd of Gold & Silver) Reference to the infamous Kingin no Hisago. A blockable command grab. Sonson takes out the gourd and sucks the opponent in the gourd, cooks it and the opponent is shoot out in an explosion. Sonson will have an animation where she looks at the gourd in frustration if the attack fails to connect.
Hofuku Zenshin: (Forward Crawling) Makes you crawl along the ground and your hitbox becomes very tiny, enabling Sonson to sneak under several kinds of attacks. Pressing an attack button or executing a Special/Hyper move will stop your crawl and immediately make you do the resulting attack.
Air Dash: Dash forwards or backwards in the air. Sonson rides on the Kinto'un (Somersault Cloud) left or right.
Wall Walk: Sonson walks around the edges of the screens. Can use P to cancel and drop back on the ground, or K to perform a flying kick from the screen edge that knocks down, making it great for mindgames and crossups.
Life-Up Peach: An assist-only attack. Sonson will take a peach that recovers her teammate's life.
Tenchi Tsuukan (Level 1): (Passing Through Heaven & Earth) Sonson throws her staff into the air, enlarges it, and a giant end of it comes down to smash the foe. If you want to combo, you need to connect with Sonson's initial staff throw — which doesn't have much range (though it makes for a great anti air.)
POW (Level 1): Makes the word POW appear and travel across the screen. If it hits, your opponent turns into fruit which Sonson promptly eats and then spits out a seed. Big time start up on this move, making it all but impossible to combo with, but the hit box is pretty big. It's a reference to the POW item in the SonSon arcade game, wich turns all enemies on the screen on food.
Enou (Level 1):(The Monkey King)Sonson turns into an Oozaru (Great Ape/Monkey) which you can control with the joystick and buttons. This lasts for 4 seconds with Super Armor. Pressing Kick makes you breathe fire and while you're doing so you can aim it up or down with the joystick. Punch buttons do various punch attacks. Great move that inflicts a lot of damage even if your opponent is blocking. Based off of the Oozaru in Japanese folklore, and the move name refers to another popular moniker of Sun Wukong/Son Goku and is the most popular nickname.
Several objects and techniques used by Sonson are references to her grandfather's origin game, Son Son. The "POW" Hyper is modeled after an item that turned enemies on-screen into fruit (and in this game, it turns the enemy in one of 3 possible fruits seen in the game). She also gives off a peach as an assist, which is another item in the original game.