The 5th, and for years final movie in the Rocky Franchise, Rocky V was the big send-off for the character. For that reason, the film sought to bring the character back to his roots, and finalize that he is never going to fight science fiction movies again. It does this in the most haphazard, (blog) cruel manners (blog post) it really is quite remarkable.
Source: Rocky V Movie Review - Decker Shado