Gotham Sneak Peek: Penguin Suffers Through "The Ice Cream Test"

To see whether Penguin's violent impulses and obsession with revenge are still lurking under the surface, Strange and Mrs. Peabody (Tonya Pinkins) give him the only serving of ice cream in the Arkham cafeteria.

[...] the other patients become upset that they didn't get ice cream and Penguin is left to defend himself.