Created By: Kitch on March 16, 2012
A disguised major foe comes out and challenges a character, perhaps the protagonist. During the fight, when the foe is satisfied with what he sees from the character, he unmasks, and reveals himself to be...the character's grandfather! Or some other older relative. Typically they will be the one who gave that character their earliest training. The characters I am thinking of are Grandpa Gohan from Dragon Ball, and Vice-Admiral Garp from One Piece. Both first appeared masked, and discarded those masks for a surprise reveal after fights.
Hello, Unknown Troper. You'll need to get known to lend a hand here.