Wallis is now aged 12 years old. Her parents are happily married and they are strongly bonded into their married life. There is no any information about their extra affairs, boyfriend and girlfriend. Her nationality is American and she is of black ethnicity.
Wallis has been active as an actress since 2011. She made her acting debut by starring the role of Hushpuppy in the movie Beasts of the Southern Wild. Next year she played the role of Blessing in the short movie Boneshaker. She is also famous for portraying the role of Margaret Northup in a period drama film 12 Years a Slave. Her net worth is $3 million dollars.