Krusty the clown.
Krazy Kat.
kangaroo jack
kyo, from fruits basket
kind?
Krazy Kat .
In Season 13 there will be a character called Kevin
carton
Captain Kangaroo would fit the bill I think.
Kid Flash , King of the Royal Mounted ,
a game that starts with the letter K
something that has to do with school that starts with the letter K is Kids
4 letter word that starts with k