I wanted to make a special Machinima Style video, where certain characters (that aren’t supposed to be on the same map) would fight each other, and was wondering if it would be possible for anyone to help me/and or give instructions on how to:

1.swap Character skins (replace an existing character skin with another existing skin)

EXAMPLE:

Replace this green SPECTER character (above) to look like this NSO TERRORIST

2.color them (like what Gtlcpimp did when he ran around as spider man, so I know for certain it’s possible)

3. Do actual 3D modifications to the characters (add backpacks/pouches/helmets/masks)
(The 3D part unfortunately I think is something that has never been done before but, I imagine I will need a certain 3D editor in order to change the characters, but I don’t know what I would use.)

I know all the skins are in the .ZAR files of the maps and I can locate them, and I know that the Skins are probably encrypted and compressed, but not sure how I would decrypt them and decompress them. I guess I would also have to repack files and verify checksums but I don’t know anything about that either.
I guess maybe I would have to make my own tools or something for that but I don’t know how to do that.

I thought about learning MIPs but honestly I don’t know if that’s worth my time, especially if I don’t need to, then I definitely don’t want to spend a lot of time doing that (even if it is a relatively easy language to learn).

Also I would also like to know how to distribute the skin mod. (through and .elf file perhaps?)