![Captain Marvel first appearance under Mar-Vell alias (1967 - Marvel Superheroes #12) | Captain marvel, Marvel comics covers, Marvel comic books Captain Marvel first appearance under Mar-Vell alias (1967 - Marvel Superheroes #12) | Captain marvel, Marvel comics covers, Marvel comic books](https://i.pinimg.com/736x/5f/23/de/5f23de8704aaa61fd943fd0655158346.jpg)
Captain Marvel first appearance under Mar-Vell alias (1967 - Marvel Superheroes #12) | Captain marvel, Marvel comics covers, Marvel comic books
![Who was the first established mainstream hero type comic book character that either DC or Marvel killed off and left that way? - Science Fiction & Fantasy Stack Exchange Who was the first established mainstream hero type comic book character that either DC or Marvel killed off and left that way? - Science Fiction & Fantasy Stack Exchange](https://i.stack.imgur.com/VgcbM.jpg)
Who was the first established mainstream hero type comic book character that either DC or Marvel killed off and left that way? - Science Fiction & Fantasy Stack Exchange
![Who was the first established mainstream hero type comic book character that either DC or Marvel killed off and left that way? - Science Fiction & Fantasy Stack Exchange Who was the first established mainstream hero type comic book character that either DC or Marvel killed off and left that way? - Science Fiction & Fantasy Stack Exchange](https://i.stack.imgur.com/1MXjv.jpg)