[@deia876lat]Sorry for the late response. I've been busy with school.

At the early stages of the mutation, the mutants are humanoid. Only in the later stages of the transformation do their bodies stop looking human.

We can forgo the old names. While some people still remember what the world was like pre-apocalypse, most of the world has decided to start over.

That would depend on the type of creature. Currently, there are three types of creatures planned (sea creatures, earth creatures and sky creatures). They also vary in appearance and size. The size will affect how powerful their powers are but won't change what they can do. The smaller creatures can be defeated by bludgeoning or other physical means, but the more giant beings will require different methods.
They are still a work in progress, but here are some of their abilities/physical features:

[Hider=Sea creatures]
[List]
[*] Have tentacles
[*] Hypnotism
[*] Incredible agility
[/list]
[/hider]

[Hider=Earth creatures]
[List]
[*] Superior strength (larger creatures only)
[*] Ability to regenerate lost body parts or create new ones
[*] Venomous to touch (smaller creatures only)
[*] Can reshape their body at will.
[/list]
[/hider]

[Hider=Sky creatures]
[List]
[*] They are invisible to the human eye
[*] They can manipulate sound waves
[*] They can float and make themselves intangible
[/list]
[/hider]

The main goal is survival; however, depending on how the RP goes, that might change.
I hope that helps :)