|This article is about a non-canonical topic in the Metal Gear series.|
The younger brother of Weasel joined the mercenary trade to get closer to his brother. Weasel, however, realized this as foolish especially when he was not skilled enough to become one. At some point, he was given a lucky pendant by Weasel. During one of their mercenary operations, Weasel and his brother were assigned to two different sides of the conflict, with the latter's side eventually losing. Weasel ultimately didn't warn his brother, despite his side being cornered and being slaughtered, which resulted in his brother's death the next day. When Weasel found his brother's corpse, he saw that the lucky pendant had been chewed through, indicating that in his final moments, his brother became extremely hateful of his brother and blamed him for what resulted in his death.
Even though Weasel had no direct involvement in his brother's death, rumors ended up circulated that Weasel had killed him, which eventually resulted in Weasel's mom committing suicide, and his father, in anger for Weasel's perceived role in their deaths, getting into a fight that resulted in a scar above Weasel's right eyebrow and his father subject to a wheelchair. Years later, Weasel would admit that his brother was the one person he cared about.
- Metal Gear: Ghost Babel (mentioned only)