Yes, yes, I know: not an open world game, not a horse. But before you made D-Horse defecate - before you rode across the realms of Hyrule - you met Yoshi.
Making his debut in Super Mario World for the SNES, this delightful dinosaur brought some of the best platforming experiences to the franchise. After three games of stomping on our enemies like uncivilized apes, Yoshi enabled us to quite literally spit our enemies' attacks right back at them. As the ultimate power-up of the 2D Mario platformers, and our first companion in the perpetual battle against the Koopas, Yoshi stands as the mightiest of steeds in video game history.
It is so unfortunate, then, when considering how often Mario abuses his mount. Many have noticed that in the original Super Mario World animations, Mario seems to compel Yoshi to do his bidding by striking him on the head! Disturbed by this cruel behavior, some video game analysts have come to believe this to be evidence of Mario having anti-social personality disorder (ASPD). Poor Yoshi.