From Kirbypedia

English Name:	Arthur
Japanese Name:	オーサー卿 Oosaa kyou Sir Arthur
English Voice:	Unknown
Japanese Voice:	Nobuo Tobita
Episode(s):	052, 099, 100
Species:	Kirby's species?
Gender:	Male
Category:	GSA Member, Ally

Sir Arthur is a character unique to the anime, Kirby of the Stars (Kirby: Right Back at Ya!), and an ally to Kirby.

Arthur is the leader of the Galaxy Soldier Army and one of the few to survive the war with Nightmare's demon beasts.

It isn't clear, but Arthur appears to be of the same or a similar race as Kirby and Sir Meta Knight. He has green skin, blue eyes, and his armor is gold with lighter gold decorations. The pointed helmet and long shoulder guards serve to give him a rough star-shape, fitting for the leader of the GSA. He wields a gold and silver colored sword with a red gem on the hilt.

Arthur first appears in action figure form in the middle of the series as a kind of foreshadowing. Meta Knight had said early on that he believed all of his comrades had died in the war, but in the series finale Arthur and others appear to help in the final battle.

It isn't known if Arthur is a Star Warrior or just part of the GSA, but considering his high status it's likely. Nothing is known of his background or personality due to the small amount of screen time he gets.

His fellow knights are Sir Dragato, Sir Nonsurat, and Sir Falspar.

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Kirby Anime Characters:

Main Characters: Kirby - Fumu (Tiff) - Bun (Tuff) - Meta Knight King Dedede - Escargon (Escargoon)

Villains: Nightmare - Customer Service - Demon beasts

Minor Characters - Guest characters