Kirby
Kirby is the main protagonist of Nintendo's Kirby video game series created by Masahiro Sakurai at HAL Laboratory. The Kirby series is one of Nintendo's many well-known game franchises, spanning nearly twenty games since 1992.[1] His first appearance took place in the 1992 video game Kirby's Dream Land, where he was portrayed by a two-dimensional sprite; since Kirby 64: The Crystal Shards for the Nintendo 64, he has made several appearances in 3-D. He has been featured in other video games from Nintendo, on Nintendo's merchandising, on comic books, and even on a television show. Kirby also appears in the Super Smash Bros. series.
Tiff
Tiffany Ebrum, better known as Tiff, (Fumu in Japan) is Tuff's older sister, who appears in the anime Kirby: Right Back at Ya!. She lives with her family in King Dedede's castle. Tiff is known to be the smartest inhabitant of Dream Land. Tiff is the only one who has an ability to call upon the Warp Star when needed, because she is the one who cares about Kirby the most. Though her last name is never exactly explained, it can be assumed it is 'Ebrum' because her father is called 'Sir Ebrum'. She is the deuteragonist of the show.
Meta Knight
Meta Knight is a major character in the Kirby series appearing in most of the games, manga, as well as the anime. The intrigue and popularity surrounding Meta Knight within the Kirby fandom largely lies in his shrouded motives and his striking likeness to Kirby himself. Due to Meta Knight's way of doing things and his often-hidden intentions, the relationship between Kirby and Meta Knight is unpredictable in nature, and range from anywhere between being bitter rivals to being steadfast allies to one another and can change at a moment's notice. He respects a code of honor, and always offers Kirby a sword whenever he fights against him. Meta Knight is a playable character in many spinoffs, and is presented in many of the newer games as a "friend or foe" character.
NME - Nightmare
Nightmare (eNeMeE in the English dub of the Anime) is a wicked final boss character and major character in the Kirby series, despite only making three major appearances in the games. His goal is to spread dark nightmares and influences throughout the galaxy, and uses his cunning wit to accomplish the feat
King DDD
King Dedede (also spelled King DeDeDe or King DDD) is a major recurring antagonist (and anti-hero) to Kirby in Nintendo and HAL Labs' long-running Kirby video game series, appearing in every game except the game Kirby & the Amazing Mirror, making him the most recurring major character of the series besides Kirby and Waddle Dee. He is the greedy self-proclaimed king of Dream Land, which is located on the quaint planet Pop Star.
Escargoon
Escargoon (Escargon in the Japanese version) is one of the main characters in Kirby: Right Back at Ya!. He is King Dedede's sidekick and one of the new characters added to the series. Several episodes are centered around him and he was given a good deal of character development. He is voiced by Naoki Tatsuta in Japan and by Ted Lewis in the Dub.
Tuff
Tuff (Bun in Japan) is one of the main characters in Kirby's anime series. Tuff is an ally of Kirby and often plays a large role. His last name is never fully explained, but it can be assumed it is 'Ebrum' because his father is called 'Sir Ebrum'. In the Anime he is voiced by Rika Komatsu, and in the dub by Kayzie Rogers. He is the tritagonist of the show.
Knuckle Joe
Knuckle Joe is an enemy appearing in five Kirby games as of now. He is, however, a recurring and semi-important character in Kirby: Right Back at Ya!.
Sirica
Sirica (known as Silica in the Japanese version) is a pale and white alien girl in Kirby: Right Back at Ya!, and a semi-important character.