A new Lord of Chaos comes down to the Earthly plane and seeks to replace Klarion.Both accuse one another of being a mole trying to infiltrate the Team. Tigress is sought out by Cassandra Savage and Onyx, two League of Shadows members who profess to have defected.Beast Boy's mounting tragedies and traumas start to take a toll on his mental health.A mysterious figure tries to foil their efforts and seemingly kills his target. Three time travelers- Saturn Girl, Phantom Girl and Chameleon Boy-are tailing the trio to prevent some undisclosed tragedy.Ma'alefa'ak plans to purge every G'arrunn and B'lahdenn on Mars.There, they find themselves amidst civil unrest stemming from racial prejudice and a murder mystery. Miss Martian, Superboy and Beast Boy travel to Mars for M'gann and Conner's wedding.Christopher Jones was hired as Storyboard Revisionist for season four.Season four will focus on the core season one characters that fans already know and love.Season four will have 26 episodes and another time jump.There are 11 finished scripts, six episodes recorded, but none animatics completed.There are 12 finished scripts and eight episodes recorded.Season four is subtitled Young Justice: Phantoms – 12/09/20.24 of 26 scripts are completed, with 20 episodes being fully recorded and 3 being partially recorded.All 26 scripts are completed and 22 episodes fully recorded.Pre-production of season 4 is virtually done. 9 episodes are complete, five more are in post-production and twelve are being animated overseas.Eleven are being animated in South Korea. All 26 episodes have been fully recorded, 13 are in the can, 7 are in post-production and the last 6 are being animated right now.14 episodes are in the can, 7 are in post-production, and the last 5 are being animated.16 episodes are in the can, 6 are in post-production, and the last 4 are being animated.19 episodes are in the can and 7 in post-production.20 episodes are in the can and 6 in post-production.Official key art for season 4 has been release, along with an interview with Brandon Vietti and Greg Weisman teasing the upcoming season.