Donkey Kong (Donkey Kong)

Donkey Kong is a rival to Mario, and a major antagonist in some Mario games.

Donkey Kong
Based off of King Kong, Donkey Kong kidnaps Mario's girlfriend Pauline and climbs to the top of a tower made up of ladders and griders. It was the player's job to climb the ladders to get to the top, avoiding obstacles created by Donkey Kong, involving barrels, fireballs, and spring-like objects.

Mario vs. Donkey Kong
Mario's popularity in the Mushroom Kingdom has grown so much, that Mario starts his own toy company, that sells "Mini-Mario" wind-up action figures. Donkey Kong really wants one of these toys, but they were all sold out. In frustration, Donkey Kong robs the Mini-Mario Toy Company and steals many Mini-Marios. It is Mario's job to navigate various landscapes in pursuit of Donkey Kong to get the stolen toys back.

Mario vs. Donkey Kong II: March of the Minis
Now, Donkey Kong is an employee of the Mini Mario Toy Company, which now sells Mini-Donkey Kong, Mini-Toad, and Mini-Peach toys. One day, the company announces the grand opening of a "Super Mini-Mario World", and Mario's guest of honor is Paulene. Mario holds out a Mini-Mario toy to her, but Donkey Kong holds out a Mini-DK. Paulene takes the Mini Mario, which infuriates Donkey Kong, who grabs Paulene and runs for the elevator. Mario chases after, but cannot catch up, as DK goes to the top floor. Mario must control the Mini-Mario toys to get through each floor and battle Donkey Kong.