In Futuball football is war. FutuCorp has built in an extra rule about on-pitch violence being allowed to please the crowd and enhance the entertaintment.
Players with a brutal personality is marked with a red icon and a number next to their player image. Protective players are marked with a blue icon and a number.

Brutal players will during the match try to damage your opponents players and make them malfunction.

Protectors will try to step in between to stop the brutal attempts or take the hit for the weaker players.

Rule of thumb is that you should have around 2-3 of each player personalities in your starting line-up.