@Ysavvryl: Pretty much. It's basically supposed to be like an icy version of a Caterpie, though it would appear fairly late in the game. Gynamoth is going to have some tricks up its sleeve though. I also added Ice Beam as kind of a "secret" move if the user delays Gynapillar's evolution.
I also changed Gynapillar's ability so it becomes frozen 100% of the time under icy conditions, and also made a move which can let the user thaw out the pokemon so it can attack (that's also why hail is a TM move). Yeah, it's a pretty useless idea when put practically, but I think it's still entertaining nonetheless.
I've edited my last post; I added Gynapillar's evolution (Gynapod, which is still just as useless). I also changed around a couple of stats for Gynapillar and added a couple of new moves.