Why in Database: Turtle Man, actually Rocks Ricco, is a criminal character who took on a turtle identity and is the bad guy in one of the comic books published in the old Captain America #23. He lives in the swamps, using other turtles to fight with the intruders, he also gives shelter to bandits creating his gang. Captain America and Bucky defeat him, of course, and hand him over to the police.
Captain America #23 : Turtle Man can be seen on a many frames in this 15-page comic book (he does not appear on all pages).
Author: XYuriTT