Kengen Zambimaru is a Kage level shinobi but still works under root he was once Drake and yumi Uchiha's classmate.
Kengen was born after 42 years of Fourth Shinobi World War,he's born of unknown Parents .It's just known his parents died of some disease living him orphan
HE is quite handsome and attractive he has a muscular figure she is admired my many female shinobi's due to his appearence he has tan skin golden brown hair sometimes she wears a nomal shirt and a skirt and caries a katana while on a mission he wears a simple root outfit.
Kengen is very smart and intelligent boy but is full of arrogance and does not consider anyone as his equal he is very rough and mischevious.
He is extremely good in ninjutsu and fair at taijutsu but he was the worst student in class in terms of genjutsu he is a battle oriented genius and has many tricks in his sleeve.
Its believed that his father experimented on him by implanting first hokage's cells in him also his father further mutated the cells making them more strong he activated his kekkei genkai right after his fathers death. To somewhat he has also shown the ability to use boil release when he fought Drake.
since a child he has shown ability to use fire based technique later he was also able to use water release technique's as a root member use's heavy fire based techniques rather than anything . When he met Drake again he used a earth release technique which proves he os very talented.