Information on the cameo
Karen "Kai" Millard Morris was the second wife of Stevie Wonder, and gave birth to two of his children: Kailand Morris and Mandla Kadjay Carl Stevland Morris. The two divorced in 2012 after an 11-year marriage, citing irreconcilable differences as the reason. She works as a fashion designer.
Appearance in the rap battle
Karen cameos with the rest of Wonder's family during the line, "Nine different kids with five different mothers!" She appears in the middle-left square of The Brady Bunch title sequence.