Donkey Kong (ドンキーコング, Donkī Kongu) is the main protagonist from the Donkey Kong series. In his first appearance, Donkey Kong, he was the opponent of Mario, but he soon starred in the Donkey Kong Country games which depict him as a protagonist. However, he remains a featured character in Mario spinoff games.
 Character description
A character named Donkey Kong made his first appearance in the arcade game of the same name. Here, he was Mario's first opponent who held his girlfriend, Pauline, captive over a construction building. Mario had to make his way to the top of the tower to rescue Pauline from Donkey Kong. Donkey Kong would later return in Donkey Kong Jr. which saw his young son rescuing him from the now antagonist Mario. He would once again be featured in Donkey Kong 3 which saw him go up against Stanley the Bugman.
After this, Donkey Kong seemed to be largely forgotten in the video game industry aside from remakes of the arcade classics, until Rareware released Donkey Kong Country for the Super Nintendo. Donkey Kong Country saw the appearance of Cranky Kong, who claimed to be the original Donkey Kong from the Donkey Kong arcade games. The current Donkey Kong appearing from Donkey Kong Country onwards is the original Donkey Kong's grandson. Donkey Kong Country depicted Donkey Kong's first battle with his arch-enemy King K. Rool, and was such a massive success that it helped the SNES take the lead in the 16-bit console war. The game was followed by two sequels in which Donkey Kong was kidnapped by King K. Rool, having to be rescued by Diddy Kong and Dixie Kong. As such Donkey Kong was not playable, with Dixie Kong being the second player.
However, Donkey Kong would be featured in Super Smash Bros. which marked his first appearance in a fighting game. He would then finally be featured once again as a playable character in Donkey Kong 64 for the Nintendo 64. He would then be featured in Super Smash Bros. Melee before starring in the Donkey Konga series and Donkey Kong: Jungle Beat. After appearing in Super Smash Bros. Brawl, the Donkey Kong Country series received some new games - including Donkey Kong Country Returns and its 3DS remake, as well as the upcoming Donkey Kong Country: Tropical Freeze.
While he has switched between appearing as a protagonist and sometimes an antagonist, Donkey Kong had always essentially been good and never really been evil. He remains a part of the Mario universe appearing in many of the Mario spinoff games along with Wario since Mario Kart 64. Donkey Kong also appeared as a baby in Yoshi's Island DS; and in the Mario vs. Donkey Kong series, where Mario and Donkey Kong are rivals once again.
 In Super Smash Bros.
 As a playable character
His in-game description is as follows:
 In Super Smash Bros. Melee
 As a playable character
Donkey Kong returns in Super Smash Bros. Melee as a starting playable character. He remains mostly the same from the original, but his new side special move, the Headbutt, allows DK to embed his opponents into the ground giving him some free hits. Donkey Kong is known for his incredible strength -- he is capable of walking and jumping while carrying Crates, Barrels, and Party Balls, items that normally decrease a character's walking speed and cause them to become unable to jump. He is also no longer the heaviest Super Smash Bros. character; the newcomer Bowser surpassed him. Donkey Kong is ranked 17th on the current tier list in B tier.
As a playable character, Donkey Kong has three trophies, a normal trophy acquired by beating the Classic Mode with Donkey Kong on any difficulty, and "Smash Red" and "Smash Blue" trophies won by beating the Adventure and All-Star Modes, respectively.
His normal trophy reads:
 In Super Smash Bros. Brawl
Donkey Kong returns as a starting playable character in Super Smash Bros. Brawl. He is no longer the sole representative of his series, as Diddy Kong appears alongside him as well. With new physics in the game, Donkey Kong can no longer be comboed as easily, like in Super Smash Bros. Melee, and his power, range, recovery and speed stats have slightly improved and is no longer in top falling speed. His Final Smash is the Konga Beat in which DK takes out the Bongos and plays them. By timing their button presses, the attack power can be increased. During this move, DK is invincible, but it is more risky when playing on a moving stage like Rumble Falls (ironically, Diddy's and DK's stage). Though, the screen scrolls much more slowly while the Final Smash is in action. He is still ranked around the middle of the tier list, placing 21st in D tier.
 In Super Smash Bros. 4
Donkey Kong has been confirmed as a playable character.