Cammy is inspired from Battle Angel Alita, I know it sounds weird since Cammy is blonde and Alita is brunette but they have the same fighting style. Their face is the same and their pose is the same:


Both are skinny Amnesiac super soldiers who got brainwashed by their creators. Cammy story is 80 percent inspired from Alita.
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Charlie is inspired from Egon from Ghostbusters, he is basically a more badass and muscular version of him. Charlie is basically an Egon with Abs.

Rose is inspired from Lisa Lisa from Jojo's Bizaare adventure, Both of them are psychic old ladies who looks hot and uses a scarf as a weapon. Both are Europeans too. Rose is Italian and Lisa Lisa is Spanish. Actually many Street fighter characters are inspired from Jojo series.

Trowa and Duo from Gundam Wing are the inspiration Yun and Yang. You Can see the resemblance.










