1st appearance of Claw in "The Sword and the Silent Scream." Script by David Michelinie, art by Ernie Chan (as "Ernie Chua"). Batman and Robin star in a one-page Hostess Twinkies ad, "The Mummy"

We meet Claw, real name Valcan, who walks the streets of Ichar, capital of the realm of Pytharia. Claw informs a female companion that he has no memory other than the past few weeks – when he entered Ichar.  He knows not how his hand came to be as it is.  When city guards chase Claw she leads him into a trap...