Before Kendrick Lamar Duckworth was known as just Kendrick Lamar, he went by the name K. Dot from 2003 to 2009. Under the moniker, he released his first mixtape titled ‘Youngest Head Nigga in Charge' at the age of 16, he then released a mixtape called ‘C4‘ still under K-Dot. Kendrick Lamar released four mixtapes under the moniker K. Dot. Kendrick occasionally calls himself K-Dot in songs.
During a 2011 interview with Hard Knock TV, Kendrick Lamar spoke on his name change saying: “The name change was just me basically developing myself, When people heard the name K. Dot, they were like, ‘The kid is dope, he can rap; but who is he?' That went on for years, just another kid in the streets that can rap good, right? So I was like, ‘Y'know what? I want people to know who I am as a person and what I represent.'”
According to Kendrick, the worst song he ever made is the fifth song from his C4 mixtape called “Bitch I'm In The Club”.