Oh, don't get me wrong, Maractus has an amazing design. Its competitive value and overall memorability, though, are a bit... abysmal.
It actually still gets decent movepool, comparing to a Caterpie is too farfetched. It's one of the few grass types that can learn Drain Punch. It has a good mixed movepool like Drain Punch, Giga Drain, Wood Hammer, Seed Bomb, Hyper Voice, Grasswhistle, Bounce, Sucker Punch, Petal Dance, Growth, Hidden Power and Knock Off. And of course, the rare and rare Spikes. I'm not listing stuff like Peck or Pin Missle, those are just bad. I think running a Mixed Set in the sun with growth, sunny day, giga drain and drain punch might work. Or forego sunny day for a Ninetales and try something ike Sucker Punch in its place.
I think pink blobs are pretty forgettable. Barring Clefable with its extensive movepool and ChanBliss... The rest are just forgettable. Well, there's jiggle puff.