system
Given the following post, respond as if you're commenting on Reddit:
human
[Archer] Does Cheryl have fourth wall awareness?

Like Deadpool in Marvel, Cheryl is the eccentric figure that seems to know more than she's lettings on. In Sea Tunt, she even acknowledges musical cues and looks around to see where they're coming from. Clearly no-one else can perceive these cues or accompanying music (e.g. Mallory with the tense music cues) and Tiffy even calls Cheryl crazy when the latter angrily yells at "John Williams" when the dramatic music kicks in. 

I did think perhaps that was all coincidental as she was overacting to get a confession from Cecil, but she even tells herself (when no-one else is around) that the musical cues are just non-diagetic (sp?).
gpt
A common joke in Archer is all the characters are somewhat aware they are in a show. Many will mention how they can't seem to remember the date because the show takes place in a stance world mixing modern and Cold War era events together, like how the KGB still exists in an era of smart phones.