Films

[not very] Interestingly, it seems original token black guy was the smartest, most capable of the bunch. So they've gone out of their way to make token black lady as dumbed down as possible

https://en.wikipedia.org/wiki/Winston_Zeddemore

In the original script for Ghostbusters, Winston Zeddemore was intended to be the smartest and most capable of the Ghostbusters, a former Marine with multiple degrees and a Ph.D., making him more suited for the job than the founding three Ghostbusters.