DC Comics

VOLK

3

APPEARANCES

3

SERIES

FIRST APPEARANCE

Green Lantern/Sinestro Corps: Secret Files #1 cover

Green Lantern/Sinestro Corps: Secret Files #1

February 2008

Earliest catalogued appearance of Sheriff Mardin.

KEY APPEARANCES

All 3 appearances.

Green Lantern/Sinestro Corps: Secret Files #1 cover

Green Lantern/Sinestro Corps: Secret Files #1

Earliest catalogued appearance of Sheriff Mardin.

Feb 2008

No listings

Green Lantern Corps #10 cover

Green Lantern Corps #10"Back to Life"

Jan 2026

No listings

Justice League Intergalactic Special #1 cover

Justice League Intergalactic Special #1

Jun 2026

No listings

SERIES

Green Lantern Corps

Green Lantern Corps

19 issues

Green Lantern/Sinestro Corps: Secret Files

Green Lantern/Sinestro Corps: Secret Files

1 issue

Justice League Intergalactic Special

Justice League Intergalactic Special

1 issue