The Catalyst
Rattrap uncovers a catalyst program that accelerates the growth of Cybertron's newfound plant life. Meanwhile, Blackarachnia discovers the truth about Thrust's Spark.
More from Season 1
Episode 1
The Reformatting
The Maximals awaken on Cybertron, unable to remember how they got there. Incapable of transforming, they are hunted down by Vehicle Transformer Drones known as Vehicons.
Episode 2
Master of the House
Seeking out allies, Blackarachnia and Cheetor discover that the entire Transformer population of Cybertron has mysteriously vanished. Rescuing them from a Vehicon attack, Optimus discovers the truth about Cybertron.
Episode 3
Fires of the Past
While searching for clues to their missing memories, Blackarachnia and Rattrap encounter Jetstorm, Thrust, and Tankor -- three deadly new Vehicon generals created by Megatron.
Episode 4
Mercenary Pursuits
Rattrap discovers a countervirus that helps him transform -- but once he starts, he can't stop.
Episode 5
Forbidden Fruit
The Maximals discover a new Beast Mode Maximal -- a bat named Nightscream -- and a mysterious fruit tree, neither of which should exist on the machine world of Cybertron.
Episode 6
The Weak Component
Rattrap finally learns how to transform, only to discover his Robot Mode has no weapons. With nowhere else to turn for protection, he strikes a deal with Megatron.
