Seigle and Schuster's Superman. Kane and Finger's Batman. Beck's (formerly known as) Captain Marvel. Simon and Kirby's Captain America. Marston's Wonder Woman. There are names that are always liked to certain superhero characters, but are there cases where the character simply goes beyond the creator?
Two stand out in my mind: Simon and Kirby's Bucky Barnes, and Weisinger and Norris' Sandy the Golden Boy. Both sidekicks in their creation, they've been so heavily retooled they simply aren't the characters they were created as. How much of their creator is left to them?
Now there are some other examples, like Kane and Finger's Robin/Nightwing and Broome and Infantino's Kid Flash/Flash that, at the end of the day, remain extensions of the characters that their creators first put to paper, however much else they've changed. But there are some other cases, like Wonder Woman, Aquaman, The Vision, The Black Knight, and even Superman himself, that don't much resemble the characters that we met when they first hit the comics stands.
Is there some point at which a character simply isn't who their creator(s) gave us anymore? If so, are they still "So-and-So's" superhero?