Bitcoin is a digital currency that was created by Satoshi Nakamoto in 2009.It is created electronically and impossible to control it.This currency are not printed currency like dollars or euros.Running computer all around the world are producing it.Owing to this reason they are different from other currencies.
The basic thing that bitcoin makes difference to the other cryptocurrencies is its price. It has a large price that other cryptocurrencies cannot reach as of now. It has also been created by someone you mentioned. Other than that, all cryptocurrencies are the same. They are digital and can be only exchanged using exchangers or wallets in order to become real money such as dollars and others.