iron man mk1 is tony starks 1st suit up that he made when he was captured by an afgan gang who made him build a bomb or he would die so instead of making a missile he make the mk1 armour to escape from the afgans hide out but unfortunatly they found the armour and rebuilt it then dyass came along stole the armour and tony arc reactor to try to kill him fortunatly tony had made mk3 by then but even that didn't work so tony destroyed dyass by blowing up the bigger arc reactor!