It isn't an invincible shield and it isn't op, either leave the titan alone in his bubble, break the shield with goldengun/nova bomb, run in bubble and fist of havok. And before you say 'thats bs you can only counter shield with a super, dont forget most other supers can only be countered by another super aswell, and there's the potential for the shield user to get no kills if no-one goes into him. Not op