From Heroes Wiki
|Ability to:||Manipulate and mimic gases|
Gas manipulation is the ability to control gases and morph into any gas.
Krasi has so far demonstrated that he can manipulate oxygen, but he probably can manipulate any gas. He has demonstrated this by sucking away the oxygen in a bus and soon everyone begins to gasp for air, except him. As a byproduct this power also gives him the ability to breathe in any environment. He was seen to morph into thin smoke and had very good control in that state. This gas mimicry was also shown when parts of his body turned into grey smoke when attacked with a knife. The first manifested aspect was the Gas alternation followed by the Gas mimicry.