@lops3004 I would just make his gas more opaque like Bangalore just not quite as extreme. Even since they tinkered with Caustic, hardly any opponents are slowed down, so the effect is increased again. The damage could also be increased and as a counterattack, robot legends don't get any more damage.
Passive I would make it fireproof as a chemist experimenting with dangerous liquids would somehow fit it. But it's just a rough idea
But like Mirage or Wattson, he should warn his team if someone is triggering their gas remotely.
