You will Watch ATOM Season 2 Episode 16 online for free episodes with HQ / high quality. Stream cartoons ATOM 216 Critical Mass Vinnie “The Mass” Rossi returns — now a molten magma man — bringing freak volcanic rifts all over the city. The reason behind his appearance? Lioness. On a side note, the extremeness of Hawk and Shark’s snow fun causes $97 million in damages, which the city expects the two to pay.