Thought of some others, who are not necessarily characters I dislike, but would not recruit them.
Rock: When we first meet him, his duty is to look after Lepant's store room. Then a gang of intruders show up and he gives them a friendly greeting before ditching his position to move to their castle and look after their junk without giving any notice to his current employer.
Juppo: Again, hired by Lepant to provide a security service (really, Lepant?....) He installs a whole system of robots to deter intruders, then when he meets a group of intruders, he greets them as fellow thieves, and even shuts down the robots to enable them to escape easier.
Kyle: Great guy, great swordsman, great magician, but definitely a Hoes Before Bros kinda guy.