|This article belongs to the Classic Timeline|
5 years prior to Alien Force
Kevin Levin, after being imprisoned in the Null Void with Vilgax, was somehow brought to the Null Void Incarcecon. While being very hostile towards his fellow prisoners, one prisoner named Kwarrel got through to him and helped him recover from his first mutation of absorbing energy from the Omnitrix. Morgg, a guard at that time, didn't like that Kwarrel was helping the other prisoners. Morgg orchestrated a commotion in the prison yard; Kwarrel seeing the opportunity to escape Incarcecon through a tunnel he was digging and take Kevin with him. Morgg, having known about the tunnel for months, intercepted them and fought with Kwarrel, who died by his hands while giving Kevin a chance to escape. Kevin regretted his decision to save himself ever since.
Later, Morgg rose to the position of warden and made some extreme changes to Incarcecon. He fired all the previous guards, replacing them with humanoid robots. He then began using the prisoners as slave labor to mine underneath the facility, as a blue hallucinogenic dust was found in deposits of the asteroid the prison was built on, which Morgg could illegally sell as drugs and use the prison as a front for. The robots were used so that they wouldn't turn against Morgg or report his illegal acts. Morgg then enforced a policy that Incarcecon was off-limits to Plumber visitation. Any prisoners that were to be transferred to Incarcecon would be sent via one-way teleport, with no way to beam out of the prison.
Ragnarok escaped from the Null Void Incarcecon.
After becoming Ultimate Kevin, Kevin returned to the prison and joined the working prisoners, aiming to get close to Morgg and kill him, as revenge for killing Kwarrel 6 years ago. Ben and Gwen teleport to the facility to warn Morgg of danger and secretly find Kevin, feigning lack of knowledge of the prison's one-way teleport system. Morgg escorted them to temporary living quarters, locking the door to avoid them finding out about the prison's secret operations. They broke the door and searched for Kevin in the mines. Morgg caught them and ordered the guards to kill them. Ben, as Humungousaur, fought them off and accidentally experienced the hallucinogenic properties of the drug dust. Realizing Morgg had turned to drug-trafficking, Ben and Gwen captured him and prevented Kevin from hurting him. Kevin fled; meanwhile all the fighting in the mines had destabilized the structure of the prison, which allowed all of the prisoners to run away free, save for one. Gwen contemplated going after them, but Ben said not to bother, as still being stuck in the Null Void was prison enough.
- Morgg (prison guard, later warden; formerly)
- Prison Guards (formerly)
- Robotic Prison Guards (formerly)
- Kevin Levin (escaped)
- Kwarrel (deceased)
- Ragnarok (escaped/deceased)
- Dagger Aliens (escaped)
- Vendetta (first appearance)
- ...Nor Iron Bars a Cage (first reappearance)