N'afọ 1928, iji gbakee site na ọnwụ nke Oswald the Lucky Rabbit, Disney bịara na echiche nke a òké agwa aha ya bụ Mortimer mgbe na a ụgbọ okporo ígwè na-aga California, na-eme ka elu a ole na ole dị mfe Eserese. The òké e mesịrị renamed Mickey òké (Disney nwunye, Lillian, na-enweghị mmasị ụda nke 'Mortimer òké') na starred na ọtụtụ Disney emepụta fim. Ub Iwerks nụchara Disney mbụ imewe nke Mickey òké. Disney mbụ ụda film Steamboat Willie, a katuunu starring Mickey, e wepụtara na November 18, 1928 site Pat Powers nkesa ụlọ ọrụ. Ọ bụ nke mbụ Mickey òké katuunu wepụtara, ma nke atọ na-kere, n'azụ Crazy Plotin' na The Gallopin's.
Nọvemba 18, 1928