The Boss's horse

The Boss's Father was Andalusian horse that was The Boss's most trusted steed.

Biography
Born during the 1950s, this white horse was The Boss's trusted steed. The horse was an Andalusian, a Spanish breed known for its beauty, ease of riding, and outstanding performance.

When The Boss "defected" to the Soviet Union in 1964, the Andalusian was present with her. After Naked Snake and The Boss's first confrontation in Dremuchji North, the horse, while rearing, stepped on Snake's left hand. He later reappeared with The Boss at various points. He was last seen at Rokovoj Berej, bearing witness to The Boss and Snake's final battle, as well as grieving over The Boss after Snake killed her, managing to get away from the MiGs bombing run.

Post-Snake Eater
Sometime afterwards, the Andalusian somehow managed to somehow travel all the way through the Ural Mountains through Europe and across the English Channel or was just brought to a British horse market, was located by Strangelove who was searching for him as he was the final witness to The Boss's and Snake's fight. Strangelove couldn't prove if he was actually the Andalusian horse or just a similar but different horse as he wouldn't let anyone ride him, which she found out the hard way trying.

In 1974, The Andalusian horse was brought over to Costa Rica by Strangelove. Big Boss (Naked Snake) briefly encountered him near the AI facility. After defeating Peace Walker for the first time, Big Boss rode it over to the underground base. After Peace Walker left for Nicaragua, the horse rushed to Big Boss's aid to help him stop Peace Walker: dodging missile and collapsing trees. Big Boss and the horse attempted to cross over the border of Nicaragua when Peace Walker managed to cross over. However, they both ended up slipping from the rocky border. While Big Boss survived relatively unscathed, The Boss's Horse was critically injured from the fall. Big Boss then, in a similar manner to his executing The Boss ten years prior, euthanized the horse with his gun. Strangelove later acknowledged, although she didn't like it at the time, that Big Boss riding the horse was enough to prove that he was indeed The Boss's horse.