

Even the slug dudes you meet in the later games are the ones too inept to get a better posting on a planet that doesn’t have a poisonous atmosphere.
According to Laidlaw, the Overseers aren’t even the top ranks, they’re just enslaved to be middle managers.
Though whether the “top ranks” even exist, or the whole thing is some sort of self-perpetuating rogue process is left ambiguous.
Judging from the clips I’ve seen, it seems that half the time Columbo catches someone, he uses impeccable logic and deduces who the killer was and explains it them before he takes them in, and the other half of the time he just invents some cockamamie bullshit to get the perp to incriminate themselves.