Diddy Kong

Diddy Kong is Donkey Kong's sidekick or "little buddy". In most of the episodes of the series, Diddy usually is protecting the Crystal Coconut along with DK. He is voiced by Andrew Sabiston, who has also voiced Junior the Giant Klaptrap and Yoshi in the Super Mario World television series.

Personality
In the show, Diddy seems to be nice, kind, and friendly to one of the Kongs. He also seems to be helpful with Donkey Kong, even when he's trying to catch the Crystal Coconut.

However, in Kong for a Day, Dixie Kong, who is Diddy's girlfriend, thought Donkey Kong was picking on her, so he told Diddy, and he also got mad, despite the fact that Donkey Kong didn't do anything wrong.

Appearance
Of course, he is seen in his regular game appearance. However, Diddy Kong shares several traits to a spider monkey. He has versatile feet, and a prehensile tail like what a spider monkey has.

For his clothing, it consists of a red cap which has the Nintendo logo on it and a red tank top with yellow stars. However, his clothing in the TV show is different. The difference is that there are no details in the clothes, including the Nintendo logo on the hat and the yellow stars on the shirt.

Donkey Kong
Donkey and Diddy are seen as best friends and little/big buddies. Throughout the show, Diddy and Donkey always team up to get the Crystal Coconut back from King K. Rool. In the Donkey Kong 64 instruction booklet, however, Diddy is considered as "Donkey's little nephew wannabe" in page 7 of the booklet. Diddy is also considered as Donkey Kong's favorite nephew in the English version of Super Smash Bros.

Dixie Kong
Dixie is seen as Diddy's boyfriend, while Diddy is seen as Dixie's girlfriend. In the show, Diddy is shown to really care for Dixie. In some other episodes, he is shown to try to kiss her, but sometimes, Cranky interrupts.

Bluster Kong
Diddy and Bluster don't really interact with each other. Diddy, along with the other Kongs, thinks Bluster is a selfish jerk who's nothing more than a mama's boy who messes up and makes him and Donkey Kong look bad.

Trivia

 * The "diddy" in his name is a British English slang word and is translated to "small".
 * As seen in the episodes Booty and the Beast and Speak No Evil, Dude, he is shown to be afraid of sharks and shots, which is possibly because he's too small for those things.