Kaiser is a dragon form in Breath of Fire IV. It is the second dragon transformation Ryu obtains, after (initially) losing the battle at the end of the second chapter; Ryu obtains the form in a fit of rage to Rasso's actions against the residents of Chek. The form easily crushes Rasso's monster and nearly wipes out the town. Only Nina's emotional outburst is able to calm Ryu down.