Rebel XD is one of the fastest rappers in the world, well in fact he is the fastest rapper in the world. Rebel is a three time Guinness World Record holder.
1992, 674 syllables in 54.9 seconds
1998, 683 syllables in 54.5 seconds
2007, 852 syllables in 42 seconds
Check out the videos below to see Rebel in action. In 1998, Guinness used a computer to slow Rebel’s speech down to normal speed and he in fact pronounces every syllable in every word.
Here is the 1998 record breaking moments.