so im a mapper and i think i know a way to making the medics uber charge however im not a coder so may not be a 100% but heres my idea, i made vortigaunts from half life (in one of my maps) use some thing like the medics charge they turn blue use the mediguns beam particles and they take no damage. so heres how i think it sould work(do the bots you made have damage filters? seting the damage they take like bullets or grenade damage? if so you could set it to a damage type that they cant even take. for example my vortigaunts use drownrecover as the damage type because its harmless you get it??? anyways you can use the uber skin if you can and if not try getting a uber texture to place on any object props npcs etc. if not also try making there colour diffrent then red/blue if that makes sense. that might work then (Depending on what things you can use)