Opposite of "troll".
People who try to make others feel better, rather than make them feel bad by "trolling" them.
Negatrolls go around being polite, kind, caring, warm, full of love, and complete sweethearts, because they have the courage and strength to help people other than themselves. They only want to make others smile.
A: Hey, that negatroll there is making everyone feel great about themselves!
B: Yeah, s/he is so much more awesome than those trolls on the other pages.