Crypt

Crypt, also often called "Red Crypt" and formerly "Cordglass21", is an American YouTuber, since he did a couple of vlogs. He's also the director of Red Reserve.

About
He mostly uploads rap songs, disstracks, rap on games, rap challenges and rap vs trap. He also sometimes voiced his opinion about certain songs.

YouTube History
He launched his channel on June 15, 2012, and uploaded his first video the same day.

KSI Beef
Him, Deji, Jallow and Dax have all rapped on a disstrack they all collaborated on. Before the disstrack, he once said that KSI is not the greatest rapper of all time, and provided reasons for that. On a big part of his verse in the disstrack, he used a line or two containing multiple words starting from each letter in the phrase "KSI IS A BITCH".

Rap Challenges
He has made some rap challenges, such as attempting lyrical rap songs at a higher speed. He also has rapped on Fortnite and even done rap versus trap videos. Rap versus trap is a series of lyrical rap songs being rapped on mainstream trap song instrumentals.