on december 15, 2006, the series ended. reruns were shown on kids' wb as part of the then-new cw network's e/i requirement, but stopped airing due to kids' wb opting to use cookie jar entertainment shows "will & dewitt" and "magi-nation". "krypto" was aired on boomerang from february 5, 2007 to january 3, 2014. the two-part holiday special, "iguanukkah", aired on cartoon network, december 21, 2008 (as well as christmas eve and christmas day), as part of the all-day holiday specials marathon. it was shown on boomerang.