Make a unit group hostile to a player

[RontoKing]

So I was thinking about making a RPG for multiple players but in it I wanted to add multiple computer controlled players(humans, orcs, centaur, undead...) that would at first be neutral to all the players and get more and more friendly or unfriendly to a player depending on what he/she does.

No, I have all of that sort off figured out but my actual problem is that if I am to add all of those forces then I would have no room for actual players.
So, I thought about making all of those 1 player(Player 12 - Brown) but now I have this problem. How do I make it so that when a player attacks a unit that belongs to one of the unit groups(which will be the forces) make only those units hostile to that player, not the whole Player 12. Making them neutral hostile doesn't work because they become hostile to, well, everyone.

If there is no solution I might have to resort to making less comupter controlled players or less user controlled ones :/.

 

[WaterKnight]

Reserve another player slot for units that turn hostile? Change the owner of those units during runtime then.

 

[RontoKing]

The problem is that I also want the computer controlled players to be able to become hostile to each other as well. I don't think i actually mentioned that, sorry.

 

[Tonex]

You could use all four of the neutrals as different factions, since players can't be a neutral slot

 

[RontoKing]

That is a pretty good idea. I'll look into that. Thanks!

 

[RontoKing]

Actually, I looked into that and apparently neutrals are hard to control. Or at least I think. As in they flee from battle. Also, they appear to already used for some weird reasons. I don't know if by assigning them to a computer would create bugs. Is it recommended to use them?

 

[Tonex]

Did you make sure that the neutrals both unally the player and are unallied by the player?

 

[RontoKing]

Nevermind, I already started work on the map and didn't use the passive players so I don't risk anything. Thanks for the help, anyway .
Edit: +Rep for you!

 

[UndeadImmortal]

Did you set Can Flee to false?