Zel and the mando mech

Zel well were do we start.he was born on 18 bby(before battle of yavin)correct me if I'm wrong)and was raised in the house of zellex(zels a mando)he was a great inventor for instance he built the mando mech.one day on 5 bby his home was raided by the empire zel managed to escape but not only did escape he grabbed a ton of supplies and fled in a tie fighter(tie striker to be correct)and also managed to make his own his armor and used custom weapons and a dark saber(I think a black katana looks more like a dark saber)and fought for the rebels for one reason to avenge his house(or family).the mando mech is equipped with a flamethrower