I think customize Red Guard can be funny and interesting to differentiate
different red guard member.

- Spencer: Add epaulet or/and military medals.
- Dixon: A toolkits integrated or not with his armor (like mechanical arm).
- Butch: Champion belt (funny just with a pant).
- Bender: More massive arm.

I think add weapon can be more realistic with other guard member. By exemple:
- Pendragon, a melee weapon.

From a technical perspective the NPC has two parts:
1) The image when the player "chats" with the NPC
2) The animated character that walks/attacks/etc.

Now the technically superior way to implement your idea, would be to create a
framework, like we have for Tux, to add decoration to the animated NPC characters.

The easier way to do it, for a limited number of models, would be to create
additional models with the suggested modifications.

Well, it's just change the 3D models that infrared have, I guess. Change defs.h
to allow more enemies surfaces and copy-paste a few code lines.

I really found strange Bender like the others. He don't appear, in no way, the
strong man that he is. (And if you provoke him, instead of giving you a punch,
he will take a Exterminator, what, by the way, also makes him appear weaker.)

This framework... Appear that will give a lot of trouble.