drainer is one of bens aliens in the series ben 10:beyond time & space , he was the first alien scanned by ben in the series.
a purple troll with a biker jacket, with huge hands with shark-like mouths in the middle of the hands and yellow glowing eyes plus a tail with stegosaur plate like tail.
life force (chi) drain
life force aura
life force energy projection
life force balls
true form (when zapped by so much energy, turns into energy being)