A dishonest or unprincipled man, or one of the X-Men
... You have two of 
the most dishonest, unscrupulous, dishonorable, unprincipled,... [DOC] [TLE] Unprincipled | Define Unprincipled at Dictionary.com [PAR] Unprincipled definition, lacking or not based on moral scruples or principles: an 
unprincipled person; unprincipled behavior.