Foreshadowing: While we never get to see their faces, since the pair are trapped in the Spider Queen's cocoon. The other two captives in her lair, sound very much like the Gold and Silver demons, Yin and Jin.
Lampshade Hanging: Sandy and Mei comment on how they don't use their base that often.
Nice Job Breaking It, Hero: Pigsy allows himself to get distracted by a woman in a clearly dangerous part of town. Tang tries to warn him, but Pigsy ignores him until it's too late. Something that Tang keeps reminding Pigsy of at every opportunity.
