|The information in this article comes from Marvels, warlord of mars and is not written by Edgar Rice Burroughs.|
image by Gil Kane, Rudy Nebres, and Janice Cohen
He was once an odwar, and according to Kantos Kan, the greatest Barsoom had ever known. No man save for John Carter was quicker and more adept with a blade. Protecting Kantos Kan during the battle at Zodanga, he was injured.
He could no longer remember his old life, and now was incredibly simple minded, but this made him no less heroic. Grogg cared a great deal for his friend Kantos Kan who he often referred to as "Little One".