Mike

Mike is Bloom's adoptive father. He found Bloom as a newborn baby trapped in a burning building. He rescued and later adopted her with his wife, Vanessa. He loves Bloom and thinks of her as his "little girl", much to Bloom's dismay. Mike worries about Bloom at times, but he always gives her his support.

History
When he first saw Bloom she was in a building on fire and he saw that she was protected by the flames,so he adopted her with his wife Vanessa then he and her raised her till the age of 16 until she went to Alfea.

Trivia

 * The father of Lockette (Bloom's Pixie) from the series Pop Pixie (a spin-off series based on Winx Club) bears a certain similarity to Mike.
 * "Mike" is an abbreviation of "Michael", which is derived from the Hebrew name "Mikha'el", which means "Who is like God".
 * Like Bloom, Mike's last name is Peters in the US Novels as presumably she get her last name from her Earth parents.