Characters ultimately help Boycie deliver motors to Nelson Mandela House (8)
I believe the answer is:
personae
'characters' is the definition.
(I know this)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for personae that I've seen before include "See 1" , "Theatrical roles" , "Dramatis ..., characters in a play" .)