We underestimated the doctor the first time. This time we are prepared. We will punish him for our humiliation. We will destroy Sonic for defeating us. And we will grind their world to dust in retribution.
— Zavok, Sonic the Hedgehog #22
In the recent past, the Deadly Six were enslaved by Dr. Eggman using a ancient relic to use them as his enforcers. Soon, after Sonic the Hedgehog had unwillingly freed the Zeti by kicking the relic out of Eggman's hand, the Deadly Six rebelled against him and took control of his Badniks using their electromagnetic powers. Despite this, they were soon defeated by Sonic. Following their defeat, the Deadly Six took over one of Eggman's bases he left in Lava Mountain Zone and remade it in their image, calling it Zeti Castle.
The Last Minute
One day at Zeti Castle, Zor reported to Zavok how the Eggnet was in chaos due to Dr. Eggman's doings on the world down below. The two were soon visited by a person named Dr. Starline. He introduced himself as an assistant to Eggman and requested that the Deadly Six help them with a current crisis that they were in. Starline let Zavok know that Eggman did not actually know he was on the Lost Hex but told him that working with the Eggman Empire once again would give the Deadly Six an opportunity to make amends with the doctor, command incredible power and destroy Sonic. Hearing all of this made Zavok accept Starline's proposal. After the doctor left however, Zavok confided in Zor how Starline made a mistake and that they would capitalize on it. Zavok soon assembled the entire team to inform them of Starline's offer and how they would immediately betray him, though they all seemed to barely listen to him. Zeena initially showed dislike for the idea of going back to Eggman as it could very well be a trap. Zavok immediately snapped at this, saying that since they underestimated the doctor the first time, they were now well prepared. Zavok planned for them to punish Eggman for their humiliation, destroy Sonic for defeating them, and then destroy their world below.