One of those who makes a film host? (5)
I believe the answer is:
extra
This might be a double definition.
'one of those who' is the first definition.
Both the definition and answer are adjectives. Perhaps there's a link between them I don't understand?
'a film host?' is the second definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'makes' acts as a link.
(Other definitions for extra that I've seen before include "No-ball or wide, perhaps?" , "Additional - bye" , "(Theatrical) spear carrier" , "Crowd-scene actor" , "wide? It could be" .)