As part of "Rojan-Jack", Rojan worked as Hydra's lab assistant even after he accidentally combined himself with Doctor Frankensaur and helped him create the monster Tarxig. When Hydra was defeated, Rojan, along with Jack, agreed to come quietly and accept arrest if Frankensaur separated them. Afterward, they were jailed together with the five decombined carnivores who formerly made up Bim-Wim-Lim-Dim-Ponko.