How many immortal monsters are there in Yu-Gi-Oh duelists of roses?

there is only one immortal monster in yugioh dulests of the roses ( i forgot his name i think it is slate warrior or something but u can get them through codes) anyways y dont u use the hidden ryrioku cheat powers up ur monster by half oppenents life points if you dont no the cheat for the code then tuff luck... CHAO