Slag

Emerging from Marvel's anthology showcase Marvel Comics Presents in 1989, Slag is a Copper Age creation brought to life by the legendary pairing of Chris Claremont and John Buscema. With only a handful of catalog appearances, this is a rare, blink-and-you'll-miss-it figure from Marvel's anthology era — the kind of hidden gem that makes digging through back-issue bins so rewarding. Slag keeps genuinely remarkable company, sharing pages with the likes of Piotr Rasputin and Ted Sallis, making those early Marvel Comics Presents issues a treasure trove for any collector who finds them.