Most of the fusions aren't too bad. My main problem is the ones with copy/flipped parts... they look strange when you do that. Like... look at the regice/steel thing.
Also, some are kinda... awkwardly put together. Um... for example, the Feraligatr parts on the typhlosion. It just... doesn't seem like it fits.
The Metallic ones... don't look metal enough. They need to be more... shaded, so that they look shiny. They would look cool if you fixed that, though. XD
The stone ones are very interesting. I've never seen them before, but I like them.
The recolors, nicely done. Not too much to comment on, but a few I really like, such as the second metapod. Is almost looks like one of the metallic ones.
And, I LOVE the Bulbasaur and it's evolutions. They look like tomatoes. XDDD
The Devamps... what game are they devamped to? O__o
The scratch sprites could use a little work... The last 2 look too square.. and the first one's outline needs some work.