Knight by Fernando Gilgado Gomez

Diagrams in Papiroflexia Magica by Fernando Gilgado Gomez
Folded from a square of Kathy Stevick's tissue-foil

Knight by Mario Adrados Netto

Diagrams in Dragons, Witches and Other Fantasy Creatures in Origami (Seres de Ficcion) by Mario Adrados Netto and Jose Anibal Voyer
Folded from a square of Nicolas Terry's tissue-foil

Knight in armor by Neal Elias

Diagrams in The Origami World of Neal Elias by Dave Venables and Marc Cooman
Diagrams in Origami 2 by Robert Harbin
Diagrams in The Origami World of Neal Elias by Dave Venables and Marc Cooman
Folded from a square of Nicolas Terry's tissue-foil

Knight on horse by Traditional

Diagrams in NOA Magazine 396
Diagrams in The Art and Wonder of Origami by Kunihiko Kasahara

Knight on horseback by Peter Engel

Diagrams in Origami from Angelfish to Zen by Peter Engel
Folded from a square of Kathy Stevick's tissue-foil

Samurai by David Petty

Diagrams in BOS Convention 2000 Spring
Folded from a rectangle of scrapbooking paper