How could I hide the real character for the Player, but still be visible for others?

Hi

Set bOnlyOwnerSee flag on your player hands component.

Set bOwnerNoSee flag on your full character component.

Docs:

https://docs.unrealengine.com/latest/INT/API/Runtime/Engine/Components/UPrimitiveComponent/bOnlyOwnerSee/index.html

https://docs.unrealengine.com/latest/INT/API/Runtime/Engine/Components/UPrimitiveComponent/bOwnerNoSee/index.html

Answers:

https://answers.unrealengine.com/questions/2547/toggle-bownernosee-ingame.html

Regards

Pierdek