The letter K itself is evil. Particularly to the letter R, it cuts off R's head to exist.
Some words starting with the letter K are:KiteKittenKryptonKitchenKalemiaKaratKnightKnitkindkookykilling
kitten
KnowKnotKneeKnewKeepKeptKeelKeenKelpKilnKindKite
KeepingKnelledKeelingKillersKingpinKnowing
kilter
kleptomaniacs
Kinky!
kangaroos
kook
Knock, knack
walkedwalkerweakenweakerweaklyweeklywickedwinkedworkedworker
cur