Such pleasant details animated hedgehog (5)
I believe the answer is:
sonic
'animated hedgehog' is the definition.
(I've seen this in another clue)
'such pleasant details' is the wordplay.
I cannot really see how this works, but
'such' could be 'so' and 'so' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for sonic that I've seen before include "Kind of boom" , "Sort of boom" , "of noise" , "Hedgehog" , "Type of boom" .)