I'm not sure what prison you're talking about but I believe
you're talking about
Genma Shiranui http://naruto.wikia.com/wiki/Genma_Shiranui
and
Kotetsu Hagane http://naruto.wikia.com/wiki/Kotetsu_Hagane
They're Izumo Kamizuki(www.naruto.wikia.com/wiki/Izumo) and
Kotetsu Hagane.