Black Knight

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The Black Knight The Black Knight, as he appears in Fire Emblem: Radiant Dawn
Name	The Black Knight 漆黒の騎士, Shikkoku no Kishi ("Black Knight")
From	Fire Emblem: Path of Radiance, Fire Emblem: Radiant Dawn
Age	Unknown
Race	Unknown
Home Country	Daein
Class	General (FE9), Black Knight (FE10)
Level	20 (FE9) 20 (FE10)
Affinity
Skills	Renewal, Luna (FE9) Shove, Eclipse, Imbue, Nihil (FE10)
Known Relations	Unknown
Allegiance	Daein, Sephiran

The Black Knight is one of Mad King Ashnard's Four Riders, equipped with a blessed sword and armor, and Ike's archrival. However, unknown until near the end of Fire Emblem: Radiant Dawn, he is also Zelgius, Begnion's strongest general. He is a branded, and only serves Sephiran, the Prime Minister of Begnion, whom he considers his true master.

Fire Emblem: Path of Radiance:

The Black Knight is first seen in Gallia, after the laguz chased away Petribe's forces. Later that night, he challenged Greil to a duel and killed him. He also offered Greil the blessed sword Ragnell, but Greil refused to use it; you also learn that Greil trained the Black Knight. The Black Knight eventually kills Greil, and Ike swears to have vengeance.

In the 27th chapter of the game, Ike, with Mist's help, defeats the Black Knight; the castle collapses immediately after, and the group escapes, leaving the Knight in the crumbling tower.

Fire Emblem: Radiant Dawn:

In Chapter 9 of part 1, the Black Knight returns to Daien to protect Micaiah from Jarod, the Begnion general. He also fights in Part 1's endgame, and disappears shortly after Daien is saved. During the time he is gone, he is in fact commanding the Begnion army against the laguz as Zelgius. Fortunately, when Sanaki arrives, he pledges his allegiance to her and stops taking orders from the senate. He continues to fight for both Daien and Begnion until the end of Part 3. He then appears to help Micaiah during a battle with one of her armies, and is finally unmasked by Ike in the tower of guidance. They proceed to duel, and if Ike wins, Zelgius, who's only goal was to duel Gawain in his strongest years, admits to Ike that he was at least as powerful as his father in his strongest years. He dies content, glad to have finally discovered how strong he was against his teacher. Ike views him as his own final teacher.