Just what he sounds like -- an older male character, usually unattractive in some way, who takes more than a passive delight in young women. Sometimes he limits himself to just talking dirty and propositioning cute girls, but sometimes he takes matters into his own hands, literally. He's not Casanova, nor is he necessarily trying to be -- but he certainly won't complain if things work out that way for him. For an Anime variant which is somewhat less repulsive, see Lovable Sex Maniac. Played sympathetically, this character is likely to fall under Chivalrous Pervert.