Visual references - King

This new hero for the game is a clear copy of Ryu (Street Fighter) in gameplay and fighting style.
To begin with, they share the same stand animation/battle pose:

Next, we have his moveset, in which even the names for his attacks are highly resembling the ones of Ryu. In first instance, Ryu's classic projectile, the Hadouken ("Wave Fist Surge") has its counterpart on King's "波动拳 " (Bōdòng quán, "Vacuum Wave Punch"):

 Both of them have the ability of shooting a charged "fiery version" of it:

Next, Ryu's famous "rising jab", the Shoryuken ("Rising Dragon Fist") is imitated by King in the form of a "升龙拳" (Shēng lóng quán, or "Spirited Dragon Fist").

You must defeat Shenlong to stand a chance, right, uh? The strong version of King's Sheng Long Fist is highly resembling of Ryu's hard-hitting supermove, the Shin Shoryuken, pose and everything:

The family picture is completed by King's 旋风腿 (Xuànfēng tuǐ, or "Cyclone leg"), ripoff of the last Ryu's move, Tatsumaki Senpuu Kyaku ("Tornado Whirlwind Leg").

Also, both Ryu and King can perform a super version of some of their special moves, including this super projectile:

To be fair, not everything from King is stolen from Ryu. For instance, his command move 浪斩 ("Wave Cutter") is modelled after one of Kyo and Shingo's special move:

"Puncha!"

Visual references - Wuxie

Wuxie is a master of Chinese martial arts.
This characters takes many cues of Yun and Yang from Street Fighter III, specially in the normals:

 

Which include the attack with his hands:

And feet:

Visual references - Panda

This walking Panda is for sure inspired in Po, from the Kung-Fu Panda franchise.

In-game, he shares some resemblances to Rufus from Street Fighter IV. They not only share a similar physique, but also some resembling strikes, like this hand palm attack when they crouch/sit on the floor:

As well as the hilarious multipunches:

He's also similar to Bob from Street Fighter x Tekken, specially in the way he crushes the opponent with his belly:

Visual references - Ray

The military wrestler Ray was considered the first grappler in this game. As such, he takes some cues of both militar and grappler characters.

His buff physique is similar to Ray, and being both military grapplers, it's no wonder why he based some of his normals on his succesful use of muscular mass. That includes the popular turning chop, as well as the hopping shoulder tackle:

Ray has learned survival tactics from Ralf. The KOF XIII version of the popular Ikari Warrior has a special move in which he ducks and slams a grenade on the ground, causing a pillar of flame to rise.
For Ray, it seems Chinese army is not in its best moment and ammo is scarce, so, he decided to punch the ground instead, which at least makes stone shards to rise:

Ray got inspiration for one of his supermoves from Maxima, another great grappler from the KOF series. They first go and gather strength, after that they perform a super duper jump, and finally land on the opponent curled into a hard-hitting human cannonball:

Last but not least, Ray has been seriously studying Abel from Street Fighter IV. His regular command throw is practically identical to the one of the french MMA warrior:

Also, his MAX Super throw is virtually the same as one of Abel's Ultra moves. Including the dramatic ending: