Pecos and Shanghai Joe were both recurring characters (My Name is Pecos and Pecos Cleans Up, and The Fighting Fists of Shanghai Joe and The Return of Shanghai Joe respectively). Then you’ve got Tony Anthony with his “The Stranger” character in A Stranger in Town, The Stranger Returns, The Silent Stranger (all directed by Luigi Vansi) and Get Mean (directed by Ferdinando Baldi).
You’ve got all the Django variants too, I suppose: Durango, Cjamango, Garringo, Shango etc etc.