The pensioners hector like the devil (3,5)

I believe the answer is:

old harry

I'm a little stuck... Click here to teach me more about this clue!

'the devil' is the definition.
(I've seen this before)

'the pensioners hector' is the wordplay.
'the pensioners' becomes 'old' (I can't justify this - if you can you should believe this answer much more).
'hector' becomes 'harry' (I've seen this before).
'old'+'harry'='OLD HARRY'

'like' acts as a link.

Can you help me to learn more?

(Other definitions for old harry that I've seen before include "Evil character" , "The Devil" .)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.