Serifos was born in 2019. He is by Daiwa Major out of Sea Front by Le Havre.
Serifos was awarded Best Sprinter or Miler in Japan in 2022.
Showing speed and precocity from an early age, Serifos, by Japanese Best Sprinter or Miler and proven sire Daiwa Major, captured the Grade 2 Daily Hai Nisai Stakes and the Grade 3 Niigata Nisai Stakes and finished 2nd in the Grade 1 Asahi Hai Futurity Stakes at 2. He blossomed as a 3-year-old and won the Grade 1 Mile Championship with an amazing turn of foot, defeating Japanese Best Two-Year-Old Colt Danon the Kid, Japanese Best Two-Year-Old Filly and Best Three-Year-Old Filly Sodashi, and future Grade 1 winner Soul Rush.
Serifos entered stud in Japan in 2025.