mother and father/grandpa & grandma:venalena and zeouticus gremory
older brother/uncle:sirzechs gremory
younger brother/uncle:millicas gremory
aunt:grayfia
mother/younger sister:rias gremory
adopted child:orion gremory
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the cybertronian devil children
Actionmegatron,optimus,ratchet,ironhide,brawl,grindor,demolisher,blackout,overhaul(myoc),overload,devastator,bruticus,,bonecrusher,jazz,soundwave,and shockwave become the adopted sons of rias's peerage