Rob him of character! (3)

I believe the answer is:

roy

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

'him of character' is the definition.
'Roy' can be an answer for 'him'. I'm not certain of the 'of character' bit.

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for roy that I've seen before include "Man" , "Rob . . . was a famous Scottish outlaw" , "-- Lichtenstein, US artist" , "- Orbison, US singer" , "-- Hattersley; -- Jenkins" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app