Captain Kangaroo would fit the bill I think.
Krusty the clown.
kangaroo jack
kyo, from fruits basket
Krazy Kat.
kind?
Krazy Kat .
In Season 13 there will be a character called Kevin
Kid Flash , King of the Royal Mounted ,
a game that starts with the letter K
Pearl Krabs is a fictional Nickelodeon character. She appears in SpongeBob SquarePants.
something that has to do with school that starts with the letter K is Kids
Kris kringle