Incomplete numbered groups.

[u/macho_boy-420]

1. The Self Referential Six (Rick and Morty): excluding and Imprisoning Rhett from the group for supposedly being very dangerous.

2. Uno, Dos and Cuatro (Ferdinand): they don't want to talk about Tres.

[u/PartialCred4WrongAns]

Daisy Jones & The Six, who never have six members