New to debian: why is there a "debian" user (also sudoer), and can I remove it?

So i switched my VPS from Ubuntu to Debian 13, because their Ubuntu images suck. Anyhow, I notice that in the image I was provided with, there is a "debian" user by default, and this user is sudoer.

Also, there is a password for this user, and I don't remember setting it up (perhaps I did it on install, don't remember me).

This freaks me somewhat. Is it my VPS host who set it up on the image they provide? Does it have other uses, such as apt updates? Can I remove it?