Z
- Zabu in X-Men #10
- Zarrko, the Tomorrow Man, in Journey into Mystery #86
- Zeus in Journey into Mystery Annual #1
- Zodiak in Ghost Rider Vol.2 #10
- Zombie in Tales of the Zombie #1
- Zuras in Eternals #5
- Zzzax in Incredible Hulk #166
Read more about this topic: List Of First Appearances In Marvel Comics Publications