Glenn is a cowboy-type character who firsts meets Marcus when he was flirting with Maggie. Glenn, according to Maggie, has a crush on her and has made multiple passes. He also appears to frequent the Asherton Tap. He becomes upset when Maggie allows Marcus to walk her home and jumps them in an alley.
He and his men all get beat up by Marcus and then arrested by the Sheriff. It is unclear as of yet it he is part of the Shepherd Organization.