Resurrection Tank
The Resurrection Tank is a large device in the Dungeons & Dragons campaign DM of the Week. The party discovered it in Dr Disrespect's laboratory. It successfully revived BlazeDragon and, with the help of the party, Ziti. They learn the tank only works when the deceased is willing to be brought back to life. Ziti explains when she was dead she saw Dr Disrespect trying to resurrect her and declined until she saw the party trying.
In Session 9 it's revealed the liquid from these tanks has mind-altering qualities. Its addition to food brought the citizens of Compton into a hypnotic stupor pledging allegiance to Mr Beast. It's possible this liquid affected BlazeDragon, although he didn't fall into the same trance as the citizens. It's unknown if it affected Ziti. Waldo claimed Ziti looked hairier, although this has never been confirmed by any DM.
It's unclear if the resurrection tank was invented by Dr Disrespect or The Sparrows.