Characters seen on the season 4 shirt

• Topmost row: Cancer, Jailbot, the Warden, the gimp-masked guy that Charise was seen standing on in the season 4 mural, Lord Stingray, and Fatty.
• First row under logo: An alien spore, Alice, Jimmy Jazz, Nova, an eyeball Warden guard, some type of beast, the Twins, Charise, talking vegetables
• Next row: Jacknife, the Triplets, the creepy blue-eyed white supremacist inmate, Turban, Gary and Bird, and Nicky.
• Row below: Jared, Ash, Paul, Janice, Cookie, Jean, and the Doctor.
• Bottommost row: Mistress trooper, Peedee, “Sweet Cheeks/”Beefy” (whatever Alice prefers to call him), the Prison Mogul, the black bored inmate, another Warden (possibly his child self?), the Mistress, and a Warden trooper.

So, you got a bunch of the main inmates (the Gay Inmate duo, Ash, Nicky, Turban, Gary and Bird, Fatty, and Lord Stingray) plus two others mixed in there.

You also have three of the four Ultraprison staff accounted for.

Then you get some extra characters like Cancer (who Karacas said to “watch for”, and her ghost is on the mural!), and Jimmy Jazz.

Season 4 is looking wild.