Funny figures in black rock (7)

I believe the answer is:

comical

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'funny' is the definition.
(synonyms)

'figures in black rock' is the wordplay.
'figures' becomes 'mic' (I can't explain this - if you can you should give a lot more credence to this answer).
'in' is an insertion indicator.
'black rock' becomes 'coal'.
'mic' placed into 'coal' is 'COMICAL'.

Can you help me to learn more?

(Other definitions for comical that I've seen before include "Rich" , "'Amusing, funny (7)'" , "Amusing or droll" , "priceless" , "Humorous" .)

I've seen this clue in the Evening Standard.

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