Good catch with the two leaves instead of the larger leaf idea. Purple pikmin have bigger leaves if you compare.

I'll just cover everything with one review.

Orange: Mmm... Not so sure about these. They overshadow red pikmin completely, and the bomb-rock carrying creates a minor plot-hole as to why the yellows can't do it anymore.

Cyan: Excellent! Your slipping mechanic is actually feasible, and the Onion diving into the water was pure genius! I'm not sure how the Onion (or even the cyans) would translate to warmer regions, but it was very imaginative.

Brown: Interesting concept, disturbing design. I'm seeing some similarities to termites, so I think you could play that up a bit more, especially since the "only pikmin that can destroy barriers made of X and enemies covered in X" formula has been canonized by rock pikmin.

Would you be interested in visiting V Rex's Spored forum? We haven't had much activity lately, and two of the regulars are busy with real-life affairs.

Nice! The descriptions were good, and I also like how the green onion was already activated when Olimar found it. I like the idea of pikmin going against a sludgy substance, but to help differentiate it more from water, I'd recommend making it so that the greens can not only survive mud but also clear it out. I also find it a little odd how you mentioned that mud dissolves pikmin, only to say later that they slowly drown in it. The vine climbing seems like a bit of a stretch, since pikmin can already climb branches and spiderworts, but swinging across gaps is a nice touch.

PIKMIN AI!