[City of Villains] I may have mentioned this before, but you are required to do the basic function of your class. I think I referred to a Mastermind or three who would not summon their pets?
Today, I was on a team with a Stalker who did not use Hide. A Regen Stalker, she also did not use Integration. Or any toggles at all, in fact.
There are two defining powers for a Stalker: Hide and your Assassin Strike. Using the second requires the first, without which you are just a low damage class with caster hit points and no defenses to speak of. Regeneration is about healing yourself. If you do not turn on your healing power, you die; also, it has all of your protection against crowd control.
You may not be surprised to hear that she did not, in fact, die. You can still hide in lowercase, in the sense of running to the back of the group if the enemy looks scary.
If you can see the Stalker on your team, kick her from the group.