Seymour Gutz's tank (IDW)

In the IDW continuity story arc Desperate Measures, 's prosthetic body is destroyed during a raid by a mind-controlled on the, and Seymour along with most of the other  are captured by the. The EPF's technicians prevent Seymour from dying without his prosthetic body, but by the time coerces  into freeing the captured Mutanimals, Seymour Gutz is revealed to be confined to a smaller immobile tank, as his prosthetic body could not be salvaged.

Seymour's life in his new tank is not a happy or healthy one. The short story Mutagen Maintenance shows a day in Seymour's life with the tank confined to a bed inside a bedroom, completely unable to move or even turn his head unassisted. Seymour's friends care deeply for him and try to keep him company, but it is still a painfully staid existence not that different from care.

In ...And Out Came the Reptiles, Seymour's health is failing, and his tank can no longer keep him alive. With a listed of needed machine components from Lindsey Baker and with 's help, takes it upon himself (and in defiance of Hob) to infiltrate  and gather the items on the list. The task is dangerous and Mondo gets his gecko tail amputated during a clash, he and Mikey are able to escape with the parts and hurry back to Mutanimals HQ while Seymour is still alive. Lindsey uses the parts to construct Seymour a new second prosthetic body to restore both his health and his mobility.