Good to know that you figured it out, good luck with your game!
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Instead of using different sprites copy and paste the same sprite but add an instance variables to it found in the object's properties bar. You could name the instance variable KursunSayisi and choose 0, 1 or 2 for each instance of the sprite.
I don't think you would need the camera at all. You can enable/disable ScrollTo in events. So you could add ScrollTo to both players next use if PlayerHuman is visible add the events ScrollTo PlayerFox disabled and ScrollTo PlayerHuman enabled. Else ScrollTo PlayerFox enabled and ScrollTo PlayerHuman disabled.
I assume you are talking about the loading screen for Construct 2 games, if you have bought Construct 2 you can change the logo to a custom one with progress bar, or just a progress bar.