Captain Pluto is a five-year-old brown gelding, foaled on October 5, 2019, in New Zealand. He is sired by Savabeel out of the dam Miss Bernardini. Trained by Grant and Alana Williams at Karnup, Captain Pluto has had 25 race starts, achieving six wins, five second-place finishes, and five third-place finishes, accumulating earnings of $358,765.

On March 8, 2025, Captain Pluto secured a notable victory in the Listed Bunbury Cup over 2019 meters. Under the guidance of jockey William Pike, he delivered a strong performance to claim the win. This triumph marked a significant milestone for co-trainer Alana Williams, who had previously won the Bunbury Cup 13 years earlier with Lords Ransom.