Robert Irsay
Irsay was one of the most controversial NFL owners ever because of an infamous relocation. He moved the Baltimore Colts to Indianapolis in the shadiest manner possible. Irsay hired a fleet of moving trucks and drove the team away in the middle of the night before Baltimore knew what happened.

He expected the city to intervene and launch legal action against him so he got ahead of the problem. Meanwhile, Indianapolis greeted the trucks like returning D-Day veterans. Now the modern Colts feel like an unrelated franchise to Johnny Unitas’s iconic team (via History).