How do the Spy’s masks work

team-fortress-2tf2-spy

I have not played Team Fortress 2 (so forgive me if I've missed any details), but I couldn't help but notice that the Spy uses masks to disguise himself. To his teammates, he looks like he's just wearing a mask, but to the enemy team, he looks like whoever is on his mask. How do the masks fool the other team (from the point of view of the actual team and not the players)?

Was this ever explained anywhere?

Best Answer

If you're taking the Spy-masks (or really, anything in Team Fortress 2) at face value (bah-dum-tiss), then you really shouldn't. TF2 is a game that prides itself on over-the-top, tongue-in-cheek, absurdist humour:

Surreal humour (also known as absurdist humour) is a form of humour predicated on deliberate violations of causal reasoning, producing events and behaviours that are obviously illogical. Constructions of surreal humour tend to involve bizarre juxtapositions, non-sequiturs, irrational or absurd situations and expressions of nonsense.

Wikipedia (Emphasis mine).

The masks are just a bit of hilarious flavor for a team to know which class a friendly Spy disguised as. It's supposed to be a joke, either aimed at the Spy's 'terrible' attempts to disguise himself, or at the enemy team for falling for such a ridiculous disguise (or both).

However the Spy does in fact disguise himself well: pretty much identical to a member of the other team, (from their perspective). Therefore, the masks themselves do not portray an accurate representation of the Spy's skill at disguising.