"Variant of Michael"
The name Mickael is commonly a male name from the "Hebrew" origin.
Mickael is a spelling variant of Michael, the English form of the Hebrew name Mikha'el. The ael ending matches the French spelling Mickael (written with a diaeresis as Mickael in French), and spellings of this type are also recorded in Scandinavian countries. It is not a separate name with its own origin: it carries the same source as Michael, and the difference from the English form is one of spelling convention rather than of meaning.
Michael means "Likeness to God.".
The pronunciation of Mickael is mih-KAYL.