Overview
ColtWalker is an odd support HG that prevents enemies from gaining Damage buffs.
ColtWalker has incredibly strong Damage tiles, but also both debuffs allies’ Rate of Fire and completely prevents allies from gaining RoF buffs. Preventing enemy Damage buffs can be absolutely incredible against some enemy teams with Murats, but it depends entirely on what you are fighting. Her little HP Shields and DMG buffs are a neat bonus, but not the main reason for using her.
Due to her drawbacks, ColtWalker is not a Doll who can simply be dropped into any Echelon, and she should mostly only be used when preventing enemy DMG buffs is needed.
With all this in mind, ColtWalker is a niche option, but recommended to have as she can completely trivialize difficult enemy teams with Murats.