Chao Yen

Marvel

Also known as Doctor Yen

Appearances

The Avengers #29 — 1966-06-00
The Avengers #41 — 1967-06-00
The Avengers #42 — 1967-07-00
Black Widow Epic Collection #1 — 2019-00-00
Marvel Visionaries: John Buscema #[nn] — 2019-08-28