Question: is j'onn j'onzz the last martian?
Answer: J'onn J'onzz (born between 1425 and 1640), commonly referred to as the "Martian Manhunter", is the one of the two last Green Martians. ... It was later discovered that J'onn is not the last Green Martian, as his father, M'yrnn J'onzz, also survived and was held prisoner for about 300 years.