Tags: Television Season.
Teenage Mutant Ninja Turtles’ fourth season originally aired between September 10 2005 and April 15 2006 beginning with the Cousin Sid episode. Fourteen random episodes from this season were released on DVD on September 12 2006.Much of this season focused on Leonardo the group’s leader who became more reserved and isolated following the final episode of the previous season in which he his brothers and their master were almost killed.