Nemeses (no, not a typo - it's the plural of Nemesis): Pinky, Statikk, SS. For obvious reasons.
Rival: Tom (Gluck Shmuck), because we are so alike... We don't argue, or if we do, we are on the same side, but still, we are rivals for the position of Forums Leftie... However, we recently resolved our similarities and agreed to become Allies rather than Rivals...
[Or So He Thinks...

j/k]