@jolm,
Hi Jolm
You asked for 37a, which in the Demon is 'Impersonator', answer MIMIC.
However 37d is your query 'whimper' which is only 4 letters, the answer here is MEWL.
You show 5 letters in your query with the m and the c being unrelated. Are you sure this is the right clue you're after?