Captain Marvel (the original) was occasionally seen throughout the 60s, 70s, and 80s, but was basically retired. He has aged slightly. He has not been seen since the advent of the black woman who calls herself Captain Marvel (see below).
Captain Marvel Jr. and Mary Marvel have appeared on a couple of occasions. but seem mostly content with roaming the stars, or whatever they are doing. All of the Marvels look older now, though not as old as they should be. After events in Dallas in 1993, a young black woman calling herself Captain Marvel has appeared in St. Louis. Mary Marvel appeared to say that the girl is true inheritor of the mantle of Captain Marvel.