Tenoch Huerta, who plays the ruler of an underwater kingdom, didn't know how to swim. When Ryan Coogler offered him the role and asked about his swimming skills, Huerta simply replied, "I've never drowned before." He took swimming lessons afterwards in preparation for the role.
For this movie the Marvel Studios intro features exclusively Chadwick Boseman as T'Challa to pay tribute to him after his passing. This is the first MCU intro with no music.
Lupita Nyong'o, who is Kenyan-Mexican, was enthusiastic to show off her Spanish speaking skills in the film.
Chadwick Boseman's brother, Derrick Boseman, has spoken out against the idea of retiring the character of T'Challa rather than recasting. He believes that his brother wouldn't have been so egotistical as to want the character to die with him and would instead want the character's journey to continue.
Chadwick Boseman initially signed up for a 5 picture deal with Marvel Studios back in 2014. This film would have been his final contractual appearance in live action as Black Panther in the MCU.