Krupper

Krupper is a super mutant stationed at the Mariposa Military Base where he guards the prison cells with Flip. Like most other mutants in the base, you can convince him you are one of the Children of the Cathedral by wearing purple robes. Even so, Krupper will not 'grant' you access, claiming even the Children aren't allowed into prison holding cells.

This prison cell block. Here we hold humans until you dip them. Good stuff, huh?

Appearances in games
Krupper appears only in the first Fallout.