A character defined both by their obsessive loyalty toward a target character and by their vastly divergent (and comparatively "cynical") moral code. The Poisonous Friend is usually attached to a pacifist protagonist or an idealistic villain. They tend to consider their "master" a person to be worshipped or protected at all costs -- even ones that the master would not knowingly permit. The name of this trope comes from a song by the band Seabound. If their behaviour actually starts to rub off on the hero, it's Toxic Friend Influence. Examples of Poisonous Friend include: