Jesse Ventura(I)

While a professional wrestler in the 1980s he began lobbying his fellow wrestlers to form a labor union. Once news of this reached Ventura's then friend Hulk Hogan, Hogan informed World Wrestling Entertainement owner Vince McMahon, who immediately put a stop to the proceedings. Hogan never bothered to tell Ventura what he did. Ventura eventually learned for himself in the 1990s, at which point he ceased to consider Hogan a friend.

[what he says his motto was as a wrestler (not as a politician)] Win if you can, lose if you must, but always cheat.