Dolphin
Dolphin (DC) appears in 18 issues in grailworth's catalog, and was first published in 1968.
Every appearance we value
Aquaman (1994) 1 issue
Crisis on Infinite Earths (1985) 2 issues
Guy Gardner: Warrior (1994) 1 issue
Justice League Task Force (1993) 1 issue
Secret Origins (1986) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.