another Canada-based entertainment company, under their then-new action-adventure brand Coliseum, who previously had production assistance in the first season, decided to take control of the series' production. Due to this change, the writers, storyboarders, and art crew who worked on the first season were let go, resulting in an entirely new crew managing the show. Also, the budget of the show dropped dramatically, leading to seasons two and three of the show being animated in Adobe Flash by Collideascope Digital Productions. The show's opening theme was later changed for the rest of the series, with it being made of recycled episode footage. On March 1, 2008, the episode pair "Johnny X: A New Beginning" and "Johnny X: The Final Ending" aired. It was originally intended as the series finale; however, the series was renewed for a fourth season. Although Warner Bros. left the series' production, the credits still listed Warner Bros. as the trademark owner of Johnny Test so far until the last season. The fourth season was animated at Atomic Cartoons with animation assistance from Seventoon Inc. and Philippine Animators Group Inc., which are both located in the Philippines. It finally premiered in high-definition on Teletoon on September 10, 2009, and on Cartoon Network in the U.S. on November 9, 2009. Later, on August 24, 2010, it was announced that the Johnny Test was renewed for a fifth season. As the fourth season before it, it would be a full set of 26 episodes with a 27th episode added to the end; the renewal brought the series total to 92 episodes. The fifth season premiered on Cartoon Network in America on June 13, 2011, along with a new theme sequence with the same song used from seasons 2–4. Starting with the fifth season, Trevor Devall would become the new voice of Dukey, due to Louis Chirillo leaving the series. Similarly, Ashleigh Ball retired as the voice of Mary, Sissy, and Missy at the end of the 4th season, due to her work on My Little Pony: Friendship Is Magic as the voice of Applejack and Rainbow Dash; as a result, she was replaced by Brittney Wilson, Mary's original voice. On March 12, 2012, it was announced that the show had been renewed for a sixth season. Like the fourth and fifth season before it, it would again be a full set of 26 episodes; the renewal brought the series