User blog comment:Baselhumos/HxH Questions and Discussions/@comment-25448830-20140923223438

i can answer question 1; both do basically the same only that illumis needles turn anyone into a slave without him needing to do anything, and shalnark has to specify what the victim should do (he does that with a control panel he always holds close). so shalnark has more control but illumi works more efficiently and he can also control multiple targets at the same time.

also, just to point it out illumi would f*cking DESTROY shalnark in a fight, not even how kurapika overpowered ubogin but imagine the beating killua would have taken if he wouldve tried to kill the chairman when they were playing this game at the hunter exam (where killua said if he didnt stop himself he wouldve ended up "killing that old man only to get the ball"). yea thats what would happen to shalnark if he would try to mess with illumi :P

also yea both are manipulators