Supreme Ian is Ian's most powerful form being equal to Supreme Zion,and holding enough power too make perfect in power. Ian has no care for anything in the universe in this form, except for his son, and his brother.
He looks exactly like Ian SSSJ10 (As he is), it has constant lightning, giving telling most people, it is Supreme too all other Super Saiyan forms. It has gold fur and blue hair.
This form is equal to Supreme Zion making it infinite in power.