Joker by Gabriel Alvarez Casanovas

Diagrams in El Libro de Las Mascaras de Papel Plegado by Grupo Riglos
Diagrams in MFPP 1996 Convention
Diagrams in Pajarita Extra 2011 - Gabriel Alvarez
Diagrams in Pajarita Magazine 29
Wet-folded from a square of double-sided mulberry paper

Nightwing symbol by John Montroll

Diagrams in Batman Origami by John Montroll
Diagrams in DC Super Heroes Origami by John Montroll
Folded from a square of Satogami paper