Alphamon technically can summon the Oryuken, DMO creates a confused idea about Alphamon to new digifans. because of that in digimon cyber sluth HM, Alphamon Oryuken was been added. but originally Oryumon isn´t necessary to get Alphamon with the Oryuken xd
Originally, in pendulum x and in digimon chronicles, to get alphamon ouryuken it was necessary to merge alphamon and ouryumon, although in the rest of alphamon's appearances it is mentioned that he can invoke it without ouryumon
