Herman von Klempt
- Also known as
Appearances
- Hellboy #[1] — 1994-10-00
- Hellboy #[2] — 1997-05-00
- Hellboy: Seed of Destruction #[nn] — 2008-06-00
- Itty Bitty Hellboy #1 — 2013-08-00
- Itty Bitty Hellboy #2 — 2013-09-00
- B.P.R.D. Hell on Earth #116 — 2014-02-00
- One for One: Itty Bitty Hellboy #1 — 2014-04-00
- Hellboy Omnibus #1 — 2018-05-09
- B.P.R.D.: 1946-1948 #[nn] — 2020-02-00
- Hellboy and the B.P.R.D.: 1952-1954 #[nn] — 2021-04-00
- Hellboy Universe: The Secret Histories #[nn] — 2021-06-02