There are set Fixl species, but You The Player have a rare shapeshifter. You can customize your Fixl's battle form however you like. You can even gain "scan data" from other Fixls you encounter and add those features on. If you need to fly through the air or swim across a river, you might need to temporarily shift its form into something else, but your Fixl will handle the swapping in and back for you.
The official server of the City of Elseways.