The Grey Martians are Subspecies of Martians from Dc Comic Universe and Likely Similar to Gray Aliens due to Skin Color is Gray and Most Having Related to Other species like Green Martian, Red Martian Yellow Martian and White Martian there having unique ancestry Species, Likely There seems To Technology is Advanced, Usually There don't have Weakness is Fire but unlike Green Martians, Red Martians, White Martians and Yellow Martians, The Grey Martians are not afraid and Weakness Fire,