Benzimar, also known as Benji, is a minor character in the non-canonical novel, Leo Rising. He is a 600 year-old low-level demon who works as a demonic resource for Wyatt and Chris Halliwell in the future.
The Halliwell brothers look to Benzimar at a demon bar named The Apple whenever they need information, and would trade with catnip. The demon would then give away all information they need until there was nothing to tell.
When summoned back to 2005 to find the Charmed Ones, who had been kidnapped by Dr. Gnivik's lackeys, the brothers looked to Benji for information. He told them everything he knew when Wyatt orbed away a jar of catnip to make him talk.
Benzimar has appeared in a total of 1 novel throughout the run of the franchise.