customized enemies

[Funduke]

I would be interested in changed enemy graphics.
Is that already possible?
If yes, please could anybody post a tutorial?

If no, could you source code wizards make a way to do this in a easy way, with graphic wad creation tools and support by winrott, like new doom enemies are easyly created by those many tools, for example deutex as a data handling tool example?

Greetings
Funduke