Golgius

Golgius (ゴルギウス) is a Holy Knight, belonging to the infamous Weird Fangs stationed at Baste Dungeon; he aided in the capture of the Deadly Sin, Ban.

5 years ago
Five years before the beginning of the series, Golgius and the three other members of the Weird Fangs confronted Ban of the Seven Deadly Sins. The resulting battle ended in Ban's capture and imprisonment in Baste Dungeon, where Golgius remained as one of the dungeon's four guardians.

Forest of White Dreams Arc
The guards that are guarding Ban mention that he along with the Weird Fangs are at the Baste Dungeon.