Prison 42

Prison 42 is a special prison that resides in the Negative Zone. It was designed by Reed Richards, Tony Stark and Hank Pym as the 42nd idea for their plans to make the world a secure place. The only entrance and exit to the prison is through the portal that resides somewhere in the Baxter Building and is guarded by the elite Mandroids of S.H.I.E.L.D. The inside of the prison is guarded by the Ultron units and are programmed to rehabilitate the prisoners. After they were used to even the odds against Kang they were replaced by the S.H.I.E.L.D. agents, because during the invasion of Kang, a lot of Ultrons were all destroyed, leaving only one left.

In the spongebob series, Prison 42 was adopted by the High Council to imprison some of the most infamous criminals that committed crimes against the worlds.

Inmates
Simone Lenoir

Lena Dupree

Jacques the boatman

Fagin

Sykes

Deadpool

Hans

Savio

Ratigan