Trying to find a plugin

So when I was on an old server, there used to be this command calld /bot. And what it did was wherever you were looking it would create a copy of you, and it wouldn't do anything it would just stand there with a username above it, for instance, /bot Notch, and it would create a player npc of notch, that wouldn't talk or move, but he would look wherever you walked. What was this plugin called, and is it availible for aternos servers?