 Jinx was featured in the first promotional pictures and trailer, shown sparring against Snake Eyes while clad in red and blindfolded, and fighting together with him against the Red Ninjas while wearing a yellow suit.Yung, who already owned a black belt in karate, prepared for about a month for the role, focusing on her cardio "because of how demanding it all was", and training in the Chinese martial art wushu for dual sword fighting.The cliff battle scene required two months of green screen work to be done.