Resident of 123 Sesame Street (4)

I believe the answer is:

elmo

(Other definitions for elmo that I've seen before include "St ----'s Fire: aura from electrical discharge" , "Saint associated with fire" , "Puppet character" , "Saint whose "fire" occurs around masts etc" , "Saint whose fire is electric!" .)

I've seen this clue in The New York Times.

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