There is a third imposter

I have a theory that I started developing while watching the series.

There are actually 3 impostors on the ship, and nobody, not even the other impostors, knew about it.

Here's the explanation for my theory:

In the series, Blue says that games with 2 impostors are very rare (a reference to the game, where lobbies with only 2 impostors are uncommon).

But if we analyze the series, we realize that only 2 impostors appear throughout the entire show. However, if we follow the logic of what Blue says, it's very strange that there are only 2 impostors.

I THINK that Purple is actually the third impostor because the series states that MIRA (the company that runs everything) fired Purple for trying to expose them, and after firing her, MIRA made sure nobody else would hire her.

So there are 4 possible explanations for how Purple became an impostor:

1. Purple lied about her past.

Impostors often deceive and manipulate others.

Her story could be partially false in order to gain Green's trust.

2. There is a hidden third impostor.

The series leaves clues for a second season.

Just because two impostors were revealed doesn't mean they were the only ones.

3. Purple was infected later.

Maybe she wasn't originally an impostor, but eventually became one after being fired.

4. It's simply a writing mistake.