I dunno about Gandrayda. She is my least favorite of the Prime 3 hunters, and I don't really like Prime 3 in particular. (but Prime2 being my absolute least favorite).
I've had some trouble with ZSS's hair any time I've tried to mess with it.
Is there a ZSS model out there with short hair and no bangs?
Looks like there is some concept showing her back which could speed up the texture:
http://metroid.wikia.com/wiki/File:Gandrayda_Concept_Art.pngI'll attempt it at some point.
I've been wanting to try a Space Pirate for a long time. Doesn't matter which type.
The Prime version would probably do best on Snake (moveset-wise), but it would be kinda hard to make it on him.
Zebesian Pirates could work on anyone really. It would just be a ton of bone disabling and hand vertexing to get the pincher things right.
The ones from Prime 3 (the shrimp-like pirates) could work on any of the skinnier characters.
I'm thinking about trying Trace on Samus. Shouldn't be too difficult. I'm sure it would get quite a few downloads. Seems like everyone used him on Hunters. He was really good when camping( lol like metaknight)
Rundus would be somewhat easy to make on Captain Falcon. The moveset would make no sense on him though. It would almost require a psa to get rid of the fire or add ice effects.
I'm going to update the OP tonight and add all of these to my list anyway. As I do test runs of them they might work out good and I'll actually do them.
I'll remove all of them that I don't feel like doing anymore. There will be a lot of Metroid characters on the list this time from the looks of it.
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