Every good rapper got a name, to shine in lights when they get hit with the fame.
Before you write your rap you need a name to publish it under. Some people use their real full names like, Kanye West. Some people use a middle name like Drake (Audrey Drake Graham).
While some people use random names that literally are untraceable to their real names, like Classified (Luke Boyd).
In my case I belong to a 'rap gang' which goes by kR3w. kr3w consists of three members currently: Pawesome, Tigrrr & Cheese.
An Example of a rap name choice by my teacher:
A good site to help pick a rap name is: http://www.myrapname.com/