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The collection was initially called Sincerely Southside Part 2, but the death of Michael Jackson stimulated a last minute renaming. Comparing to his last release, War Angel LP, 50 Cent stated:
This tape is different, I gave you "War Angel", you already know what that is. Now "Forever King". It has a 90's feel to it. Yall gonna love that right there.
The cover art for Forever King features 50 Cent's face and his New York Yankees cap digitally imposed on a skull encrusted with diamonds. Another version is more ordinary, featuring a jeweled skull with tilted crown.