Of the four people showcased when Meliodas says this line the only one who is not also featured in this panel:
Is Gerharde. Matrona and Jenna and Zaneri are all accounted for.
Odd that Gerharde is the only not there when they are guarding the Fairy King's Lands.
Since she also wasn't in the Fairy Realm Arc, I do wonder where she is.
Since it really looks like Part 2 is coming to a close, I think we might be looking at Part 3 for answers on Gerharde.

















