Hisashi Midoriya

Hisashi Midoriya (緑谷久) is Izuku Midoriya's father. He took a work post abroad.

History
At some point in his life, Hisashi married Inko Midoriya, who eventually gave birth to their son, Izuku.

Quirk and Abilities
Fire Breath (火休み Hi Yasumi): Hisashi's Quirk allows him to breathe fire.

Trivia

 * His name, Hisashi, roughly means "a long time ago". It is a reference to the sentence hisashiburi (久しぶり), which means "it's been a while (since I last saw you)", hinting at his absence along the story.
 * It's also the same kanji as the "Ku" in Izuku's name.