Chun-Li

Chun-Li is a Chinese martial artist and a character from the  Street Fighter series.

Super Mario Klemp-Won-Do: Muskeln sind nicht alles!
Chun-Li and several other characters from the Street Fighter II series appear in the Club Nintendo comic "Super Mario Klemp-Won-Do: Muskeln sind nicht alles!". She is seen laughing along with the others when Mario decides to enter the "Street Fighter II grandmaster" tournament.

After Mario's surprise victory over Zangief, Chun-Li is his next challenger. Mario immediately falls in love with her because of her beauty, unaware of this, and expects a "victory kiss" from her as a reward for winning his last fight. To his surprise, she starts kicking him, forcing Mario to think quickly. He gets the idea to tickle Chun-Li's feet with a feather, causing her to laugh uncontrollably and leaving her unable to battle. Mario wins the fight and advances, facing Blanka in his third match.

Super Smash Bros. Ultimate
Chun-Li appears as a Spirit in Super Smash Bros. Ultimate, where she is represented by Zero Suit Samus.

Trivia

 * A character resembling Chun-Li named Mel appears as a playable character in the island open in Mario Tennis: Power Tour.
 * Chun-Li also makes a cameo in the Disney film Wreck-It Ralph, standing alongside fellow Street Fighter character Cammy in Game Central Station. Also, at one point in the film, when Fix-it Felix Jr. and Sergeant Calhoun are heading to Sugar Rush to look for Ralph, in the background Chun-Li can be seen talking to generic princesses with colors resembling those of Princess Daisy and Rosalina, as well as an Hylian princess resembling Princess Zelda.