The series was picked up for an additional six episodes in October 2012.
A second season started in January 2009 with 4 additional episodes.
West has since returned to voice the character in two additional episodes.
One additional episode was later ordered for a 23-episode season.
An additional 2 episodes were picked up, making a 24-episode season on November 4, 2009.
The network picked the show up for 12 additional episodes.
However, these additional two episodes will now air as part of season four.
But the film deal fell through, and no additional episodes were produced.
An additional special episode was broadcast on March 11, 2011.
The second season, with an additional 12 episodes, began on October 23, 2012.