Moneybags endlessly changing frightful figure (8)
I believe the answer is:
bogeyman
'frightful figure' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'moneybags endlessly changing' is the wordplay.
'endlessly' means to remove the last letter.
'changing' indicates an anagram.
'moneybags' with its last letter taken away is 'moneybag'.
'moneybag' with letters rearranged gives 'BOGEYMAN'.
Can you help me to learn more?
(Other definitions for bogeyman that I've seen before include "Dreadful being invoked to scare children" , "Imaginary male feared by children" , "Jinx" , "Person (real or imaginary) used as a threat to children" , "Evil bloke giving children nightmares" .)