When the Coopers reveal their aliases, Craig says his is the worst: Dwayne Wayne, which is the character Kadeem Hardison played in A Different World (1987), a spin off from The Cosby Show (1984).
In the show when the Coopers reveal their aliases, K.C. receives Rocky Blue, which is the name of a character she played on Shake It Up (2010) a show that Zendaya stared on in the past.
Last appearance of Brett in the series, aside from mentionings, cameos and flashbacks, thus never having proved to The Other Side that he's still alive or proving to The Organisation that he fully redeemed himself.