The Giant (unnamed in the Japanese version) is a Duelist working for Malcolm in the Malcolm Crew. He was easily defeated by Kalin Kessler and was sent to the Dyne mine as a result. It's assumed he was later freed when Sector Security commenced a rescue on Crash Town.
From what little was seen of his Deck, the Giant appears to favor Burn tactics.
- Yu-Gi-Oh! 5D's episode 86: "Duelist For Hire"