Iku is itself death itself, which by mandate Olofin comes for those who are out of time on earth, so that later Olodumare decide their fate, if you go to Ara Orun or must return to Aiyé to complete his mission. Orisha Iku longer for their arrogance and went on to command the warriors Ajogún or evil (hoop, ofo, esse, EGBA, fitiwó, Akobo, etc). Dressed in black, dark brown or dark ash. He lost his duel with Orunla, so you should respect their children and take them only when you check Olofin. It has no particular religion, but through Eggun or Gold immolated him or not he made other offerings.
Iku Pataki. At first the world knew not Death. One day the young people complained to Olofin that was so crowded that not enough food for everyone. Oya Olofin called and asked to carry Iku to Earth, but this did not agree, then not just breeding the hate men and asked to be relieved of such a mission.
Then Olofin understanding that both the young and the Orisha were right, he said:
"Well, we can fix that, first send a Babalu Aye to carry Arun (disease) to Earth and when men get sick, you will lead them to Iku.
Iku and Oggún.
When Olofin entrusted his government to Iku and Oggún, were not known disease or suffering.
One day when young people had a party, one otf bought and gave to Oggún who drank to get drunk.
The owner of the forge and metal lay down to sleep. Soon, he was consult Iku that some urgent problems and attempt to awaken. Oggún furious cutting off his hand to his companion with a machete. Blood flowed everywhere. Everybody who stepped on became very ill.
Thus the disease became known on Earth.