Imu and Luffy do the same thing, in a way - they turn people into allies.
Luffy being the personification of freedom and a warrior of liberation, his allies have the freedom of choice, to become his allies.
Imu, on the other hand, doesnt allow that choice and forcefully turns people into allied demons with Domi Reversi.
If the counter to Perona's negativity is a negative human like Usopp...
...then the counter to Imu's demonification might be a demon in human form.
That demon is better known as Roronoa Zoro.
