Someone knows why the Model do this on moving it?

Someone knows why my model do this (Image). I’ve been following lots of tutorials about animations and I always had this same problem, i tried changing the models, scripts, rigidbody, trail renderer… Anything changes, it keeps happening but if I copy/paste a complete scene with this same model this doesn’t occurs.
Every time I move the player, the model clones and all the moves are cloned only in the game Tab as you see in the scene, there is nothing.
What should I do?
(I’m sorry, I am not english)

Looks like the camera’s clear flags is set to “Don’t Clear”. Select the camera and update the clear flags to something that is not Don’t Clear. More info about clear flags can be viewed here: