As with "Azn" Krn is a retarded, shortened form of the word Korean. Those professing to be Krn are but fuckheads, claiming pride in their hardcore ability to rush opponents in starcraft and being general arsehole nuisances with their breaking voices and tryhard auras.
Person 1: That guy, Song, he thinks hes soo hard?
Person 2: Shit man! He's KRN!
A krnlian is a usually young person under 13 that suffers from a severe mental disability. They lack basic hygiene and can be very annoying to be around
probably the best free roblox exploit alot of people that don't have synapse use krnl but krnl is also very popular for their network ownership patches
--antgame11
Bobby: I got krnl it better then synapse cuz it got epic network
Bill: not really better but ok