Fancy horse, Peru, one to bet on in crisis? (9)
I believe the answer is:
superhero
'one to bet on in crisis?' is the definition.
(a superhero might save you in a crisis)
'fancy horse peru' is the wordplay.
'fancy' is an anagram indicator.
'horse'+'peru'='horseperu'
'horseperu' anagrammed gives 'SUPERHERO'.
(Other definitions for superhero that I've seen before include "I'm often seen in a cape" , "Fictional character with special powers" , "One possibly involved in saving" , "Batman perhaps" , "people didn't notice in Kent, for one" .)